NOAA Technical Report NMFS 93 November 1990

Distribution and Abundance

of Juvenile Salmonids off Oregon

and Washington, 1981-1985

William G. Pearcy

Joseph P. Fisher

u.s. Department of Commerce
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NOAA Technical Report NMFS 93

Distribution and Abundance

of Juvenile Salmonids off Oregon

and Washington, 1981-1985

William G. Pearcy

Joseph P. Fisher

November 1990

u.s. DEPARTMENT OF COMMERCE

Robert Mosbacher, Secretary

National Oceanic and Atmospheric Administration

John A. Knauss, Under Secretary for Oceans and Atmosphere

National Marine Fisheries Service

William W. Fox Jr., Assistant Administrator for Fisheries
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Text printed on recycled paper

11
Distribution and Abundance of Juvenile Salmonids off

Oregon and Washington, 1981-1985

w.e. PEARCY and J.P. FISHER

College oj Oceanography

Oregon State University

Corvallis, OR 97331-5503

ABSTRACT

This report is a summary of the results of 883 purse seine sets made for juvenile salmonids

during 15 cruises off the coasts of Oregon and Washington during the springs and summers of

1981-1985. Juvenile coho salmon (Oncorhynchus kisutch) occurred most frequently, followed by

chinook salmon (0. tshawytscha). The juveniles of these two species co-occurred more frequently

than expected. Juvenile chum, pink and sockeye salmon (0. keta, O. gorbuscha, and O. nerka),

steelhead (0. mykiss) and cutthroat trout (0. clarki clarki) were caught much less frequently and

in lower numbers than coho or chinook salmon. We found no evidence of large schools ofjuvenile

salmonids. A northerly movement of juvenile coho salmon wa~ suggested by decreased catches

off Oregon and increased catches off Washington between early and late summer. Highest catch

per set ofjuvenile coho salmon was usually found inshore of 37.2 km. Juvenile chinook salmon

were usually found within 27.9 km of the coast. Juvenile salmonids were found over a broad

range of surface salinities and temperatures. High catches of juvenile coho salmon occurred in

both the low salinity waters of the Columbia River plume and in adjacent higher salinity waters.

Preferences for specific salinities or temperatures were not obvious for any species, although catch

rates ofjuvenile coho salmon were highest in years when chlorophyll content was also high. Based

on expansions of fish with coded wire tags, we estimated that hatchery coho salmon smolts comprised 74%, on average, of the juvenile coho salmon catches. The remaining 26% were presumably

wild fish or hatchery fish released as fingerlings. Hatchery coho salmon were caught roughly

in proportion to the numbers released. However, hatchery fish from the Columbia River and

private coastal facilities were caught at slightly higher rates while those from coastal Washington

and public coastal Oregon hatcheries were caught at slightly lower rates than expected from the

numbers released. No juvenile coho salmon with coded wire tags were caught that had originated

from either California or Puget Sound hatcheries.

Introduction _

Our purse seining cruises in the ocean off Oregon and

Washington from 1981 to 1985 represent the most extensive and intensive sampling with fine-mesh purse seines

in this region. This research has provided information on

the distribution, abundance, migration, and growth of

juvenile salmonids (Pearcy 1984, 1988; Chung 1985; Fisher

and Pearcy 1988; Pearcy and Fisher 1988), on the distribution of nonsalmonid pelagic nekton (Brodeur and

Pearcy 1986), on food habits and feeding rates ofjuvenile

salmonids (Peterson et a!. 1982; Brodeur et a!. 1987a;

Brodeur and Pearcy 1987 and unpub!. manuscr.; Brodeur

1989, 1990; Pearcy et a!., in press), on the scyphozoans

caught in the purse seines (Shenker 1984), on neustonic

fauna collected during these cruises (Brodeur et a!. 1987b),

and on the effects of the 1982-83 El Nino on the pelagic fauna (Pearcy et al. 1985; Pearcy and Schoener

1987).

In this report we summarize, for the first time, data on

the distribution, abundance, and lengths of all seven species

of juvenile salmonids (genus Oncorhynchus)-coho salmon

(0. kisutch), chinook salmon (0. tshawytscha), chum salmon

(0. keta), pink salmon (0. gorbuscha), sockeye salmon (0.

nerka), steelhead (0. mykiss), and cutthroat trout (0. clarki

clarkl)-caught by purse seines in the ocean off Oregon and

Washington 1981-1985. This report on juvenile salmonids

complements the report by Brodeur and Pearcy (1986) on

the nonsalmonid nekton caught in purse seines off Oregon

and Washington during the same years.
2 NOAA Technical Report NMFS 93 _

Table 1

Total number (NO) and percent frequency of occurrence (FO) ofjuvenile salmonids in purse-seine sets in different months and

years. Numbers of quantitative sets are given at the bottom for each cruise.

1981

May June July August

NO FO NO FO NO FO NO FO

Coho 625 57% 466 45% 382 66% 371 70%

Chinook 68 40% 37 27% 73 31% 51 18%

Chum 39 10% 30 18% 33 9% 37 12%

Sockeye 1 2% 4 3% 1 1% 0 0%

Pink 1 2% 1 1% 1 1% 0 0%

Steelhead 32 22% 25 15% 5 7% 1 2%

Cutthroat 18 13% 13 9% 41 30% 14 12%

All 784 73% 576 61% 536 82% 474 73%

# Sets 63 67 67 66

1982 1983

May June September May June September --------

NO FO NO FO NO FO NO FO 0 FO NO FO

Coho 529 50% 825 63% 414 74% Coho 196 49% 213 50% 195 35%

Chinook 217 61% 228 48% 15 16% Chinook 128 47% 52 26% 213 27%

Chum 1 2% 52 7% 151 11% Chum 53 2% 3 3% 0 0%

Sockeye 0 0% 20 20% 1 3% Sockeye 54 2% 1 2% 0 0%

Pink 0 0% 0 0% 47 8% Pink 0 0% 0 0% 0 0%

Steelhead 32 24% 2 4% 0 0% Steelhead 4 7% 2 3% 0 0%

Cutthroat 8 5% 9 14% 0 0% Cutthroat 7 9% 8 7% 0 0%

All 787 76% 1136 71% 628 79% All 442 71% 279 53% 408 47%

# Sets 62 56 38 # Sets 55 58 51

1984 1985

June July September May-June' June

NO FO NO FO NO FO NO FO NO FO

Coho 222 52% 164 52% 249 44% Coho 690 96% 996 63%

Chinook 104 48% 72 21% 59 19% Chinook 533 86% 282 54%

Chum 1 2% 132 21% 25 16% Chum 12 21% 106 16%

Sockeye 3 5% 8 3% 0 0% Sockeye 8 21% 11 8%

Pink 0 0% 256 21% 106 14% Pink 0 0% 0 0%

Steelhead 8 8% 5 6% 0 0% Steelhead 8 18% 10 6%

Cutthroat 7 6% 3 3% 0 0% Cutthroat 13 25% 22 19%

All 345 74% 642 65% 439 60% All 1264 100% 1427 78%

# Sets 66 63 63 # Sets 28 80

'This cruise extended from 29 May to 5 June and was restric:ed to a small area beyond the mouth of the Columbia River.

Methods _

Salmonids were collected using 457- to 495-m herring purse

seines with 32-mm mesh that fished to depths of20 to 60 m.

Although the depth that the seine fished varied among

years, we have little evidence that this had a large influence

on catches. Most salmon swim within the upper 20 m of

the ocean, and catches ofjuvenile coho salmon in gill nets

off Oregon were usually larger in the upper waters (0-6 m)

than in deeper waters (5-12 m) (Pearcy and Fisher 1988).

Chinook salmon are probably the most likely to be undersampled by surface nets because maturing fish are often

caught in deep water. However the first and third highest

monthly catches of juvenile chinook salmon were during

1985 when a shallow net was used which fished to a depth

of 25 m. Sets were usually made along east-west transects

at stations about 9.3 km apart from about the 37 m contour out to 37 or 46 km off the coasts of Oregon and
_________________ Pearcy and Fisher: Distribution and Abundance ofJuvenile Salmonids 3

Washington (Fig. 1). Actual locations of purse seine sets

are shown in Figures 4-10. Sampling methods are described in more detail in Pearcy (1984) and Pearcy and

Fisher (1988).

Juvenile salmonids in their first summer in the ocean

were distinguished from older immature ocean age groups

or from adult salmonids on the basis of length. For all

species, except chinook salmon, there was usually a large

gap between the length ranges of juvenile and adult fish

which facilitated separation. Pink, sockeye, and chum

salmon 300 mm fork length (FL) and steelhead 400

mm FL were considered juveniles. Because cutthroat trout

usually spend only one summer in the ocean before returning to fresh water (Giger 1972; Pearcy et al. in press) and

scale data indicated that most were young fish in their

initial ocean migration, they were not segregated into

juvenile and adult fish. Owing to growth ofjuvenile coho

salmon during the summer, the division between juveniles

and adults for this species progressed from 300-320 mm

FL in May to 420 mm FL in September. The varied life

histories of different stocks of chinook salmon and yeararound releases from hatcheries resulted in a broad lengthrange for this species caught in the ocean. For purposes

of this report all chinook salmon 400 mm FL were consideredjuveniles. This length range probably included most

or all chinook salmon in their first summer in the ocean

as well as many fish that entered the ocean the previous

fall and winter. Generally the greatest numbers of chinook

salmon were well below 400 mm FL.

Results and Discussion _

Catch and Frequency of Occurrence by Species

The total numbers and frequencies of occurrence (F.O.)

of all species of salmonids caught during each cruise,

1981-1985, are shown in Table 1. Coho salmon were by

far the most numerous and most frequently occurring

juvenile salmonid in the catches. A total of 6517 juvenile

coho salmon were caught from 1981 through 1985. Juvenile

coho salmon were the most numerous salmonid in 13 of

15 cruises. Chinook salmon were most abundant during

September 1983 and pink salmon were most numerous in

July 1984. Juvenile coho salmon were caught in over half

the purse seine sets. The F.O. of coho salmon for all years

and cruises averaged 58 % and ranged from 35 % in September 1983 to 96% in late May and early June 1985 off

the Columbia River.

Numbers and F.O. of juvenile chinook salmon were

usually second highest after coho salmon (Table 1). A total

of 2085 juvenile chinook salmon were caught from 1981

through 1985. The F.O. of chinook salmon averaged 38%

and ranged from 16% in September 1982 to 86% in May

and early June 1985 off the mouth of the Columbia River.

The F.O. of chinook salmon in August and September

were usually less than half the F.O. in May. This was a

greater decrease in F.O. than that which occurred for coho

salmon.

Generally chum salmon, steelhead, and cutthroat trout

were much less numerous and frequent in catches than

either coho or chinook salmon. Both steelhead and cutthroat trout were absent in catches during September; the

former probably because they had already migrated out

of coastal waters and the latter because they had re-entered

fresh water (Pearcy et aI., in press). Sockeye salmon were

rare, except inJune 1982, when they occurred in 20% of

sets and in May 1983, when a large number occurred in

a single set. Pink salmon also occurred infrequently, except in September 1982 and July and September 1984,

when fairly large numbers were caught. However, even

when large numbers of pink salmon were caught Ouly

1984), F.O. were much lower than those for coho salmon

(21 vs. 52%).

Juvenile salmonids occurred frequently and comprised

a large proportion of the total numbers of epipelagic nekton

caught in purse seines off Oregon and Washington during

the summer. Juvenile coho salmon was the first to fourth

most abundant species of nekton in purse seine catches in

June 1979-1985 (Pearcy and Schoener 1987). Chinook

salmon ranked third to eighth in abundance inJune. Combined F. O. of all salmonid species in purse seine sets were

high, averaging 71 % and ranging from 47% in September

1983 to 100% in May and early June 1985 off the Columbia River mouth.

The relatively high average frequencies of occurrence

ofjuvenile coho (58%) and chinook salmon (38%) and the

relatively low numbers caught in individual purse seine sets

(rarely more than 50 fish, and usually less than 6 fish per

set [Fig. 2]) indicate that these species are fairly evenly

dispersed in the shelf waters out to 37 km off Oregon and

Washington and do not form large schools (see also Paszkowski and Olla 1985). The fairly even dispersal of coho

and chinook salmon contrasts sharply with the very patchy

distributions of schooling species such as Pacific herring

(Clupea harengus pallasi), northern anchovy (Engraulis mordax), juvenile sablefish (Anoplopomajimbria) , jack mackerel

(Trachurus symmetricus), Pacific mackerel (Scomberjaponicus)

and market squid (Loligo opalescens), which were all caught

infrequently (average frequencies of occurrence 1979-1984

ranged from 6.9% for jack mackerel to 25.2 % for market

squid), but sometimes with thousands of individuals in a

single set (see Brodeur and Pearcy 1986).

Catch per Set by Area

Average catches per set (CPUE) of each species ofsalmonid

in three latitudinal regions (Washington, southern Washington and northern Oregon, and Oregon, [see Fig. 1]) for

each cruise are presented in Table 2. The area off southern

Washington and northern Oregon (lat. 46° 45' to 45° 36')
4 NOAA Technical Report NMFS 93

Table 2

Monthly mean catch/set (CPUE), numbers ofjuvenile salmonids and number ofsets in three regions: off Washington, offsouthern

Washington and northern Oregon, and off Oregon, 1981-1985. Blanks indicate no sampling.

1981 1982 1983 1984 1985

Area QLal. May Jun Jul Aug May Jun Sep May Jun Sep Jun Jul Sep May-Jun Jun

Coho Salmon

Off Washington 48°23'- CPUE 0.3 13. I 92 1.2 3.3 10.1 5.9 3.5 5.0 11.3

46°46' n 5 92 74 24 56 142 118 45 141 226

Sets 19 7 8 20 17 14 20 13 23 20

Off S. Wash. 46°45'- CPUE 6.8 12.3 5.5 9.2 1.0 14.3 13.7 5.4 6.6 1.4 3.8 3.2 5.6 24.6 24.7

and N. Oregon 45°36' n 259 370 236 248 22 344 247 91 105 19 65 26 96 690 641

Sets 38 30 43 27 21 24 18 17 16 14 17 8 17 28 26

Off Oregon 45°35'- CPUE 14.6 2.6 6.1 3.2 22.8 15.6 7.8 4.5 2.1 1.5 1.3 3.2 0.7 3.8

42°59' n 366 96 146 123 502 389 93 81 52 34 39 60 15 129

Sets 25 37 24 39 22 25 12 18 25 23 29 19 23 34

Chinook Salmon

Off Washington 48°23'- CPUE 0.6 2.7 0.2 2.2 0.9 0.4 2.3 0.9 0.7 7.4

46°46' n 12 19 2 44 15 6 46 12 15 148

Sets 19 7 8 20 17 14 20 13 23 20

Off S. Wash. 46°45'- CPUE 1.2 0.6 1.7 1.8 6.0 8.2 0.1 4.4 1.1 2.5 2.7 0.6 0.7 19.0 4.6

and N. Oregon 45°36' n 45 18 72 48 126 198 2 75 17 35 46 5 12 533 120

Sets 38 30 43 27 21 24 18 17 16 14 17 8 17 28 26

Off Oregon 45°35'- CPUE 0.9 0.5 0.04 0.1 3.6 0.4 0.9 0.5 0.8 7.5 0.4 0.4 1.4 0.4

42°59' n 23 19 1 3 79 11 11 9 20 172 12 8 32 14

Sets 25 37 24 39 22 25 12 18 25 23 29 19 23 34

Chum Salmon

Off Washington 48°23'- CPUE 0.0 0.0 18.9 0.0 0.2 0.0 0.1 6.4 1.0 5.0

46°46' n a a 151 a 3 a 1 83 22 99

Sets 19 7 8 20 17 14 20 13 23 20

Off S. Wash. 46°45'- CPUE 02 0.7 0.7 1.3 0.0 0.04 0.0 3. I 0.0 0.0 0.0 2.5 0.1 0.4 0.3

and N. Oregon 45°36' n 9 21 29 35 a 1 a 53 a a a 20 2 12 7

Sets 38 30 43 27 21 24 18 17 16 14 17 8 17 28 26

Off Oregon 45°35'- CPUE 1.2 0.2 0.2 0.1 0.04 2.0 0.0 0.0 0.0 0.0 0.0 0.1 0.04 0.0

42°59' n 30 9 4 2 1 51 a a a a a 2 1 0

Sets 25 37 24 39 22 25 12 18 25 23 29 19 23 34

Pink Salmon

Off Washington 48°23'- CPUE 0.0 0.0 5.9 0.0 0.0 0.0 0.0 16.1 4.4 0.0

46°46' n a a 47 a a a a 209 102 a

Sets 19 7 8 20 17 14 20 13 23 20

Off S. Wash. 46°45'- CPUE 0.03 0.03 0.02 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.1 0.0 0.0

and N. Oregon 45°36' n 1 1 1 a a a a a a a a 8 1 a a

Sets 38 30 43 27 21 24 18 17 16 14 17 8 17 28 26

Off Oregon 45°35'- CPUE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.0

42°59' n a a a a a a a a a a a I 3 a

Sets 25 37 24 39 22 25 12 18 25 23 29 19 23 34

Steelhead

Off Washington 48°23'- CPUE 0.6 U.l 0.0 0.1 0.1 0.0 0.2 0.1 0.0 0.1

46°46' n 11 1 a 2 1 a 4 1 a 2

Sets 19 7 8 20 17 14 20 13 23 20

Off S. Wash. 46°45'- CPUE 0.8 0.8 0.1 0.0 0.6 0.0 0.0 0.1 0.0 0.0 0.2 0.0 0.0 0.3 0.0

and N. Oregon 45°36' n 30 25 5 a 13 1 a I a a 4 a a 8 a

Sets 38 30 43 27 21 24 18 17 16 14 17 8 17 28 26

Off Oregon 45°35'- CPUE 0.1 0.0 0.0 0.03 0.4 0.0 0.0 0.1 0.04 0.0 0.0 0.0 0.0 0.2

42°59' n 2 a a I 8 a a 1 I a a a a 8

Sets 25 37 24 39 22 25 12 18 25 23 29 19 23 34
Pearcy and Fisher: Distribution and Abundance ofJuvenile Salmonids 5

Table 2 (continued)

1981 1982 1983 1984 1985

Area" Lat. May Jun Jul Aug May Jun Sep May Jun Sep Jun Jul Sep May-Jun Jun

Cutthroat Trout

Off Washington 48°23'- CPUE 0.0 0.1 0.0 0.1 0.1 0.0 0.0 0.0 0.0 0.0

46°46' n a 1 a 1 1 a a a a a

Sets 19 7 8 20 17 14 20 13 23 20

Off S. Wash. 46°45'- CPUE 0.4 0.4 0.9 0.5 0.0 0.3 0.0 0.0 0.4 0.0 0.4 0.1 0.0 0.5 0.5

and N. Oregon 45°36' n 16 11 37 13 a 7 a a 7 a 7 1 a 13 14

Sets 38 30 43 27 21 24 18 17 16 14 17 8 17 28 26

Off Oregon 45°35'- CPUE 0.1 0.1 0.2 0.03 0.4 a a 0.3 0.0 0.0 0.0 0.1 0.0 0.2

42°59' n 2 2 4 1 8 1 a 6 a a a 1 a 8

Sets 25 37 24 39 22 25 12 18 25 23 29 19 23 34

Sockeye Salmon

Off Washington 48°23'- CPUE 0.0 1.1 0.1 0.0 0.06 0.0 0.1 0.4 0.0 0.5

46°46' n a 8 1 a 1 a 2 5 a 9

Sets 19 7 8 20 17 14 20 13 23 20

Off S. Wash. 46°45'- CPUE 0.03 0.1 0.02 0.0 a 0.5 a 3.2 0.0 0.0 0.0 0.0 0.0 0.3 0.1

and N. Oregon 45°36' n 1 4 1 a a 11 a 54 a a a a a 8 2

Sets 38 30 43 27 21 24 18 17 16 14 17 8 17 28 26

Off Oregon 45°35'- CPUE 0.0 0.0 0.0 0.0 0.0 0.04 0.0 0.0 0.0 0.0 0.03 0.0 0.0 0.0

42°59' n a a a a a 1 a a a a 1 a a a

Sets 25 37 24 39 22 25 12 18 25 23 29 19 23 34

"See Figure 1 for delineation of the three regions.

brackets the mouth of the Columbia River (460 15'), a

major source of coho and chinook salmon and steelhead.

Much smaller numbers of sockeye and chum salmon and

cutthroat trout also originate in the Columbia River.

The CPUE ofjuvenile coho salmon between early and

late summer (May-June and August-September) generally

increased off Washington and decreased off Oregon, suggesting a northerly movement of fish during the summer

(Table 2; Pearcy and Fisher 1988). The CPUE of chinook

salmon was generally higher in May and June off the

Columbia River and Washington than it was off Oregon,

but in late summer 1982, 1983, and 1984, CPUE was

higher off Oregon than in areas to the north (Table 2).

These trends are probably the result of the migration of

Columbia River stocks of chinook salmon out of the sampling area by late summer and the influx of coastal Oregon

stocks, many of which may enter the ocean in late summer (Nicholas and Hankin 1988; Fisher and Pearcy,

unpub!. manuscr.). The CPUE of chum and the CPUE

of pink salmon were generally highest off Washington and

lowest off Oregon. Highest CPUE of sockeye salmon and

steelhead and cutthroat trout occurred off the Columbia

River although catches were generally low.

Inshore-Offshore Distributions

Average CPUE in 9.3 km (5 nautical miles [n mil) wide

intervals for all transects combined is presented in Tables

3-9 for each species. In most months peak CPUE ofjuvenile coho salmon occurred within 37.2 km of the coast.

Exceptions occurred in September 1983, June 1984, and

June 1985, when highest CPUE occurred beyond 37.1 km

of the coast (Table 3). In May and June 1985, CPUE of

juvenile coho salmon was exceptionally high compared

with other years, especially offshore of 46.3 km ofthe coast

in June 1985.

Highest CPUE ofjuvenile chinook salmon was always

within 27.9 km of the coast (Table 4). However, in June

1984 the CPUE was as high offshore of 37.1 km as inshore

of 27.9 km. The CPUE of juvenile chinook salmon was

not exceptionally high 37.1 km offshore in June 1985 (as

it was for juvenile coho salmon), but it was very high (36.6

fish/set) inshore of9.4 km in late May and early June 1985,

higher than any CPUE for coho salmon during the same

period.

Highest CPUE ofsteelhead usually occurred offshore of

27.8 or 37.1 km of the coast (Table 5). Exceptions were

June 1982, June 1983, July 1984, and June 1985, when

peak CPUE was inshore of27.9 km. Highest CPUE of cutthroat trout was offshore of 37.1 km in May 1981, May

1983, and May and June 1985. However, in other months

peak CPUE was usually inshore of27.9 km (Table 6). With

few exceptions highest CPUE of juvenile sockeye, chum

and pink salmon was inshore of 37.2 km (Tables 7, 8, 9).
6 NOAA Technical Report NMFS 9.'3

Table .'3

CPUE of coho salmon followed by number of purse seine sets in 9.3-km wide intervals (5 nmi) for all transects combined by

year and month.

Offshore Distance-Coho Salmon

";;9.3 km 9.4-18.5 km 18.6-27.8 km 27.9-37.1 km 37.2-46.3 km 46.4-55.6 km 55.7 km +

1981

May 6.2 10 13.0 21 14.9 16 1.5 6 8.5 4 1.3 6

June 5.6 21 9.9 20 2.9 9 13.2 8 2.2 8 0.0

July 1.0 7 5.9 31 5.9 14 14.7 7 1.2 6 0.0 2

Aug 32 16 4.0 20 14.8 13 3.5 13 0.3 3 1.0 1

1982

May 16.0 5 17.7 22 2.9 16 1.2 10 0.1 8 0.0 1

June 5.6 8 25.1 15 17.9 14 11.1 13 2.0 4 0.5 2

Sept 20.6 8 17.3 11 3.8 10 4.0 5 0.2 4

1983

May 5.3 12 6.7 11 1.2 17 2.2 13 4.5 2

June 1.5 17 54 17 3.1 14 7.4 7 0.3 3

Sept 3.9 20 4.3 17 4.2 6 1.5 6 9.0 1 0.0

1984

June 0.3 9 3.1 21 3.1 15 3.4 14 10.2 5 4.5 2

July 2.4 10 4.3 18 2.6 14 1.9 11 0.6 10

Sept 0.5 13 6.4 19 6.1 16 1.7 13 0.0 I 0.0

1985

May-June 23.1 12 33.0 7 6.5 2 33.5 4 11.7 3

June 4.0 19 7.5 11 9.4 18 20.7 20 28.0 4 27.0 3 12.4 5

Table 4

CPUE ofjuvenile chinook salmon followed by number of purse seine sets in 9.3-km wide intervals (5 nmi) for all transects combined by year and month.

Offshore Distance-Chinook Salmon

~9.3 km 9.4-18.5 km 18.6-27.8 km 27.9-37.1 km 37.2-46.3 km 46.4-55.6 km 55.7 km +

1981

May 0.8 10 2.1 21 0.8 16 0.3 6 0.3 4 0.0 6

June 1.0 21 0.7 20 00 9 0.2 8 0.0 8 0.0

July 0.3 7 21 31 0.2 14 0.4 7 0.0 6 0.0 2

Aug 0.1 16 1.7 20 1.0 13 0.2 13 0.0 3 0.0 1

1982

May 5.2 5 3.3 22 5.1 16 1.6 10 2.6 8 0.0 I

June 0.6 8 4.8 15 8.4 14 2.4 13 0.5 4 0.0 2

Sept 1.4 8 0.2 II 0.2 10 0.0 5 0,0 4

1983

May 0.8 12 4.9 11 1.8 17 2.6 13 0.0 2

June 1.8 17 0.8 17 0.3 14 0.6 7 0.0 3

Sept 10.7 20 0.0 17 0.0 6 0.0 6 0.0 1 0.0

1984

June 1.4 9 2.1 21 2.0 15 0.3 14 2.0 5 2.0 2

July 3.2 10 1.7 18 0.3 14 0.5 11 0.0 10

Sept 2.5 13 1.2 19 0.2 16 0.0 13 0.0 I 0.0

1985

May-June 36.6 12 3.7 7 5.0 2 12.0 4 3.3 3

June 4.3 19 3.3 11 4.7 18 3.4 20 1.2 4 1.3 3 0.6 5
Pearcy and Fisher: Distribution and Abundance ofJuvenile Salmonids 7

Table 5

CPUE ofjuvenile steelhead followed by number of purse seine sets in 9.3-km wide intervals (5 nmi) for all transects combined

by year and month.

Offshore Distance-Steelhead

";;9.3 km 9.4-18.5 km 18.6-27.8 km 27.9-37.1 km 37.2-46.3 km 46.4-55.6 km 55.7 km +

1981

May 0.1 10 0.2 21 0.4 16 1.0 6 2.8 4 0.7 6

June 0.0 21 0.1 20 0.4 9 0.9 8 1.4 8 0.0

July 0.0 7 0.1 31 0.1 14 0.0 7 0.2 6 0.0 2

Aug 0.0 16 0.0 20 0.0 13 0.1 13 0.0 3 0.0 1

1982

May 0.0 5 0.2 22 0.8 16 0.7 10 1.0 8 1.0 1

June 0.0 8 0.1 15 0.1 14 0.0 13 0.0 4 0.0 2

Sept 0.0 8 0.0 11 0.0 10 0.0 5 0.0 4

1983

May 0.0 12 0.1 11 0.1 17 0.0 13 0.5 2

June 0.1 17 0.0 17 0.1 14 0.0 7 0.0 3

Sept 0.0 20 0.0 17 0.0 6 0.0 6 0.0 1 0.0

1984

June 0.0 9 0.1 21 0.1 15 0.0 14 0.6 5 0.0 2

July 0.2 10 0.1 18 0.0 14 0.1 11 0.0 10

Sept 0.0 13 0.0 19 0.0 16 0.0 13 0.0 1 0.0

1985

May-June 0.1 12 0.1 7 0.0 2 0.5 4 1.3 3

June 0.0 19 0.3 11 0.3 18 0.1 20 0.0 4 0.0 3 0.0 5

Table 6

CPUE of cutthroat trout followed by number of purse seine sets in 9.3-km wide intervals (5 nmi) for all transects combined

by year and month.

Offshore Distance-Cutthroat Trout

";;9.3 km 9.4-18.5 km 18.6-27.8 km 27.9-37.1 km 37.2-46.3 km 46.4-55.6 km 55.7 km +

1981

May 0.0 10 0.5 21 0.1 16 0.0 6 1.5 4 0.0 6

June 0.1 21 0.6 20 0.0 9 0.0 8 0.0 8 0.0

July 0.1 7 0.8 31 0.8 14 0.4 7 0.0 6 0.0 2

Aug 0.1 16 0.2 20 0.7 13 0.0 13 0.0 3 0.0 1

1982

May 0.2 5 0.1 22 0.2 16 0.0 10 0.0 8 0.0 1

June 00 8 0.5 15 0.0 14 0.1 13 0.0 4 00 2

Sept 0.0 8 0.0 11 0.0 10 0.0 5 0.0 4

1983

May 0.3 12 0.0 11 0.2 17 0.0 13 0.5 2

June 0.0 17 0.4 17 0.1 14 0.0 7 0.0 3

Sept 0.0 20 0.0 17 0.0 6 0.0 6 0.0 1 0.0

1984

June 0.1 9 0.1 21 0.1 15 0.3 14 0.0 5 0.0 2

July 0.1 10 0.1 18 0.1 14 0.0 11 0.0 10

Sept 0.0 13 0.0 19 0.0 16 0.0 13 0.0 1 0.0

1985

May-June 0.2 12 0.3 7 0.0 2 1.0 4 1.7 3

June 0.1 19 0.1 11 0.2 18 0.4 20 1.2 4 0.3 3 0.2 5
8 NOAA Technical Report NMFS 93

Table 7

CPUE of juvenile chum salmon followed by number of purse seine sets in 9.3-km wide intervals (5 nmi) for all transects combined by year and month.

Offshore Distance-Chum Salmon

";9.3 km 9.4-18.5 km 18.6-27.8 km 27.9-37.1 km 37.2-46.3 km 46.4-55.6 km 55.7 km +

1981

May 2.4 10 0.7 21 0.0 16 0.0 6 0.0 4 0.0 6

June 0.4 21 0.5 20 0.3 9 0.6 8 0.5 8 0.0

July 0.0 7 0.1 31 2.1 14 0.1 7 0.0 6 0.0 2

Aug 0.1 16 0.1 20 0.5 13 1.9 13 1.0 3 0.0 1

1982

May 0.0 5 0.0 22 0.0 16 0.1 10 0.0 8 0.0 1

June 0.0 8 0.1 15 1.6 14 2.2 13 0.0 4 0.0 2

Sept 0.0 8 10.8 11 1.3 10 1.2 5 3.2 4

1983

May 0.0 12 0.0 11 3.1 17 0.0 13 0.0 2

June 0.0 17 0.0 17 0.2 14 0.0 7 0.0 3

Sept 0.0 20 0.0 17 0.0 6 00 6 0.0 1 0.0

1984

June 0.0 9 0.0 21 0.0 15 0.1 14 0.0 5 0.0 2

July 0.0 10 0.4 18 2.2 14 7.0 11 1.6 10

Sept 0.2 13 0.3 19 0.6 16 0.5 13 0.0 1 2.0

1985

May-June 0.3 12 1.0 7 0.0 2 0.3 4 0.0 3

June 2.1 19 2.8 11 1.5 18 1.5 20 1.5 4 0.0 3 0.8 5

Table 8

CPUE ofjuvenile pink salmon followed by number of purse seine sets in 9.3-km wide intervals (5 nmi) for all transects combined

by year and month.

Offshore Distance-Pink Salmon

";9.3 km 9.4-18.5 km 18.6-27.8 kTl 27.9-37.1 km 37.2-46.3 km 46.4-55.6 km 55.7 km +

1981

May 0.0 10 0.1 21 0.0 16 0.0 6 0.0 4 00 6

June 0.0 21 0.1 20 0.0 9 0.0 8 0.0 8 0.0

July 0.0 7 0.0 31 0.1 14 0.0 7 0.0 6 0.0 2

Aug 0.0 16 0.0 20 0.0 13 n.1) 13 0.0 3 0.0 1

1982

May 0.0 5 0.0 22 0.0 16 U.O 10 0.0 8 0.0 1

June 0.0 8 0.0 15 0.0 14 11.0 13 0.0 4 0.0 2

Sept 0.0 8 4.0 11 0.1 10 U.4 5 0.0 4

1983

May 0.0 12 0.0 11 0.0 17 0.0 13 0.0 2

June 0.0 17 0.0 17 0.0 14 0.0 7 0.0 3

Sept 0.0 20 0.0 17 0.0 6 n.1) 6 0.0 1 0.0

1984

June 0.0 9 0.0 21 0.0 15 U.O 14 0.0 5 0.0 2

July 0.0 10 0.5 18 6.8 14 13.5 11 0.5 10

Sept 0.2 13 1.2 19 0.6 16 0.2 13 0.0 1 0.0

1985

May-June 0.0 12 0.0 7 0.0 2 0.0 4 0.0 3

June 0.0 19 0.0 11 0.0 18 0.0 20 0.0 4 0.0 3 0.0 5
Pearcy and Fisher: Distribution and Abundance of Juvenile Salmonids 9

Table 9

CPUE ofjuvenile sockeye salmon followed by number of purse seine sets in 9.3-km wide intervals (5 nmi) for all transects combined by year and month.

Offshore Distance-Sockeye Salmon

<;;9.3 km 9.4-18.5 km 18.6-27.8 km 27.9-37.1 km 37.2-46.3 km 46.4-55.6 km 55.7 km +

1981

May 0.0 10 0.0 21 0.0 16 0.2 6 0.0 4 0.0 6

June 0.0 21 0.1 20 0.1 9 0.0 8 0.0 8 0.0

July 0.0 7 0.3 31 0.0 14 0.0 7 0.0 6 0.0 2

Aug 0.0 16 0.0 20 0.0 13 0.0 13 0.0 3 0.0 1

1982

May 0.0 5 0.0 22 0.0 16 0.0 10 0.0 8 0.0 1

June 0.0 8 0.5 15 0.5 14 0.4 13 0.2 4 0.0 2

Sept 0.0 8 0.0 11 0.1 10 0.0 5 0.0 4

1983

May 0.0 12 00 11 3,2 17 0,0 13 0.0 2

June 0.0 17 0.6 17 0,0 14 0.0 7 0.0 3

Sept 0,0 20 0,0 17 0,0 6 0.0 6 0.0 1 0.0

1984

June 0.0 9 0.1 21 0.1 15 0.0 14 0.0 5 00 2

July 0.0 10 0.0 18 0.6 14 0.0 11 0.0 10

Sept 0.0 13 0.0 19 0.0 16 0.0 13 0.0 1 0.0

1985

May-June 0.4 12 0.1 7 0.0 2 0.5 4 0.0 3

June 0.0 19 0.0 11 0.2 18 0.4 20 0.0 4 0.0 3 0.2 5

Catch Distributions and Oceanographic Conditions

Because of the unusually high catches ofjuvenile coho and

chinook salmon during June 1985, we prepared maps

showing contours ofsea-surface temperature, salinity, and

chlorophyll-a for this cruise (Fig. 3). These maps supplement those presented by Brodeur and Pearcy (1986) for

each cruise, 1979-1984. The numbers and geographic locations ofjuvenile coho and chinook salmon caught in purse

seines are presented by month in Figures 4 and 5, along

with the 26%0 and 31%0 isohalines (when they are present). Salinity values less than 26%0 are generally indicative of low-salinity water in the plume of the Columbia

River and values over 31%0 usually indicate oceanic or

upwelled waters with little freshwater mixing. Cool waters

during the summer « 10 °C) that denote strong coastal

upwelling are shown by dark shading in the figures for coho

and chinook salmon. Figures showing the catch distributions ofjuvenile chum, pink and sockeye salmon, steelhead

and cutthroat trout do not include these salinity and temperature contours (Figs. 6-10).

Juvenile coho salmon were abundant off both Washington and Oregon (Fig. 4). In some months large catches

were evident near the mouth of the Columbia River and

Yaquina Bay, major points of ocean entry for hatchery

coho salmon smolts. Highest catches were found at intermediate salinities of23 to 32%0, from May to June 1981

and 1985 when large numbers of smolts were migrating

from the Columbia River. Juvenile coho salmon also were

caught in waters where the surface salinity varied from

12 to 34%0.

Although juvenile coho salmon were often present in

the Columbia River plume (indicated by surface salinity

<26%0 near latitude 46° N) and in areas of fairly low surface salinity «31%0) adjacent to the core of the plume,

they were also abundant in higher salinity (> 31%0) water

outside of the plume. This was particularly evident in May

andJune 1982, September 1983,July and September 1984,

and June 1985 (Fig. 4, C and F through I) when large

catches occurred where salinities exceeded 31%0. Many

of the juvenile coho salmon caught in high salinity water

south of the Columbia River in May 1982 (Fig. 4C) were

released from Columbia River hatcheries about one month

earlier. Therefore, at least some juvenile coho salmon move

out of the plume within a short period after entering the

ocean.

During the May-June 1985 cruise, which was confined

to the region close to the mouth of the Columbia River,

catches of coho salmon strongly peaked at intermediate

temperatures of 13.5-14.5°C and salinities of 23-25%0,

a pattern not obvious during other cruises. During theJune

1985 cruise, high catch rates (>25 fish/set) were more

widely distributed between 12°C and 17 °C and between

25 and 33%0. The highest catches of coho salmon in June

1985 occurred 46 km offshore in the fairly low salinity

waters «31%0) of the Columbia River plume (Figs. 3
10 NOAA Technical Report NMFS 93 _

Table 10

Correlation coefficients (r) for linear correlations of temperature, salinity, and chlorophyll-a concentration with catch of juvenile coho salmon within cruises. Probabilities that population correlation = 0: • = <0.05, ,. = <0.01. (Data for 1982 and 1983 cruises from Chung 1985.)

May June July Aug Sept

Temperature ys. catch:

1981 - 0.08 0.08 0.09 0.27'

1982 - 0.08 0.09 - 0.13

1983 0.14 0.07 0.01

1984 0.30* 0.12 0.12

1985 0.17 0.18

Salinity Ys. catch:

1981 - 0.00 -0.68** - 0.01 - 0.35**

1982 0.06 - 0.05 - 0.27

1983 - 0.10 - 0.22 0.04

1984 - 0.13 - 0.14 -0.19

1985 0.16 - 0.14

Chlorophyll-a ys. catch:

1981 0.16 0.20 - 0.05 0.27*

1982 0.26* 0.06 0.52' *

1983 - 0.16 0.12 - 0.21

1984 0.12 0.08 0.13

1985 0.16 - 0.00

and 41). Many coho salmon also were caught inJune 1985

north of the Columbia River where salinity was 31 -

33%0. These trends suggest that large numbers of coho

salmon were associated with the Columbia River plume

in May and early June and subsequently dispersed in mid

or late June of this year.

Large catches (>20 fish per set) ofjuvenile coho salmon

occurred over a wide range of temperatures from 10.7 °C

to 16.4°C. Highest numbers (>100 fish per set) were

caught at temperatures between 10.7 and 14.5°C. Juvenile coho salmon sometimes were found in cold « 10°C),

newly upwelled water (e.g., in May and June 1982, July

1984, and June 1985, shaded areas in Fig. 4, C,H,I). Surface temperatures of 10°C or less were not recorded during the other cruises, or juvenile coho salmon were not

taken in these cool areas Guly 1981 and June 1984, Fig.

4, B and G).

Within cruises, linear correlations between temperature,

salinity or chlorophyll-a concentration, and the catch of

juvenile coho salmon per set were generally weak and

statistically insignificant (P> 0.05, Table 10). Quadratic

equations fitted to the data to test whether catches of

juvenile coho salmon peaked at intermediate temperatures

were usually not significant. These data suggest that juvenile coho salmon are not concentrated in narrow ranges

ofsalinity or temperature when they reside in coastal waters

off Oregon and Washington during their first summer in

the ocean. The few statistically significant linear correlations between temperature and catch and between chlorophyll a and catch, as well as most of the nonsignificant correlations, were positive. Conversely, the linear correlations

between salinity and catch were mainly negative (Table

10). The significant negative correlations between salinity

and catch ofjuvenile coho salmon inJune and August 1981

appeared to be the result of high catches in the low salinity waters of the Columbia River plume and oflow catches

in higher salinity water both inshore and offshore of the

plume (See Fig. 4, A and B). The lack ofsignificant negative

correlations between catch and salinity during May and

June in most years suggests that juvenile coho salmon

usually do not reside in the plume for prolonged periods

of time.

Chung (1985) found that temperature was negatively

correlated with salinity for all cruises in 1982 and 1983

(r ranged from -0.31 to -0.74). In May andJune, the

low salinity Columbia River plume water, where juvenile

coho salmon were sometimes abundant, was generally

warmer than the surrounding more saline water (See also

Fig. 3 and Brodeur and Pearcy 1986). Chung also noted

that the position of maximum catches relative to temperature varied with month. Peak catches were found at increasingly warmer temperatures during May, June, and

September 1982, for example, and suggest that distributions are influenced by changing ocean conditions and the

sea temperatures that are available rather than by a narrow, preferred, fixed temperature optimum.

In contrast to the generally weak correlations within

cruises between chlorophyll-a concentration and catch, the

correlation among years between average catch per set of

juvenile coho salmon during the early summer (May and
_________________ Pearcy and Fisher: Distribution and Abundance ofJuvenile Salmonids 11

June) and average chlorophyll-a concentration in early

summer was strong (r = 0.81, Fig. 11). This strong correlation suggests that catch rates of coho salmon are higher

in years when the average chlorophyll content is high. Unfortunately, only five years of data were available and

the correlation was not statistically significant (P>0.05).

Because survival of hatchery coho salmon in the Oregon

area (as estimated by dividing the number ofjacks returning to public hatcheries by the total number of smolts

released) was positively correlated with catches ofjuvenile

coho salmon in purse seines from June 1981 to 1985 (Fisher

and Pearcy 1988), a positive relationship may exist between

chlorophyll content and survival. All three of these factors

(coho salmon abundance, survival, and chlorophyll content) are correlated with the intensity of coastal upwelling

off Oregon (Nickelson 1986; Fisher and Pearcy 1988;

Landry et al. 1989). Although these relationships suggest

that high survival may be mediated through enhanced productivity of the salmon food chain, we found little evidence

for increased growth or body condition of juvenile coho

salmon during the relatively strong upwelling summers of

1982 and 1985, and we therefore postulated a link between

upwelling and predation rates (Fisher and Pearcy 1988;

Pearcy 1988).

Chinook salmon, although generally less abundant and

frequently captured than coho salmon, were widely scattered in our catches off both Oregon and Washington

(Fig. 5). They were also found over a broad range of

salinities and temperatures. Like juvenile coho salmon,

high catches were frequently made near the mouth of the

Columbia River, a major source ofthese fish, but they were

often as abundant in areas of high salinity water as they

were in river plumes.

The co-occurrence ofjuvenile coho and chinook salmon

in purse seine sets was more frequent than expected. Chisquare tests of the observed number of sets with both

species were significantly greater than the expected number, if co-occurrence was random (P<0.05 [based on the

product of frequency of occurrence of both species and the

total number of sets]) for all years and for all years combined. This suggests that juvenile coho and chinook salmon

are often found in or prefer similar water types.

Juvenile chum salmon (Fig. 6) were less abundant than

either coho or chinook salmon off both Oregon and

Washington. Most of the largest catche~ Ouly and August

1981, September 1982, May 1983, July 1984, and June

1985 [Fig. 6, B, D, E, G, and H) were north of the

Columbia River where chum salmon runs are larger than

in Oregon. Juvenile pink salmon were rare off Oregon.

Few juvenile pink salmon were caught during the spring.

Most were caught during July and September off Washington (Fig. 7, C and D), perhaps because they escaped

through the mesh of the seine or were near the coast and

inshore of our sampling in earlier months. The large

catches of chum salmon in September 1982 and the catches

of pink salmon in September 1982 and 1984 are notable,

since most juvenile chum and pink salmon depart estuaries

in the spring, and catches usually decline to low numbers

by late summer in Georgia Strait (Healey 1980). Juvenile

chum and pink salmon are known to migrate far to the

north during the late summer (Hartt and Dell 1986). Apparently some juvenile chum and pink salmon reside in

coastal waters off Washington for several months following ocean entry in some years.

Juvenile sockeye salmon were also very rare and usually

were caught only off the Columbia River or to the north

(Fig. 8). Steelhead (Fig. 9) and cutthroat trout (Fig. 10)

were most often caught off both Oregon and Washington,

but never in large numbers. During some cruises cutthroat

trout were caught most often in the vicinity of the Columbia River.

Distribution and ocean migrations of juvenile coho

salmon are discussed in more detail by Pearcy and Fisher

(1988), of cutthroat trout and steelhead by Pearcy et al.

(in press) and of juvenile chinook salmon by Fisher and

Pearcy, unpubl. manuscr.

Length-Frequency Distributions

Length-frequency distributions for juvenile coho and

chinook salmon, juvenile steelhead and cutthroat trout

are discussed in Pearcy and Fisher (1988), Pearcy et al.

(in press) and Fisher and Pearcy, unpubl. manuscr.,

respectively.

Length-frequency distributions for juvenile chum, pink,

and sockeye salmon are shown in Figures 12, 13, and 14,

respectively. The smallest chum salmon were caught in

May when individuals less than 100-120 mm FL were most

common (Fig. 12). The shift in the modal length of chum

salmon from about 110-120 mm FL in May to over 200

mm FL by August and September is probably indicative

of growth in the ocean. Length-frequency distributions for

pink salmon are given only for periods when large catches

occurred (Fig. 13). Because the catches ofsockeye salmon

were low, data from all years were combined for each

month (Fig. 14). Sockeye salmon were most common in

May and June when most were 90-150 mm FL.

Recoveries of CWT Salmonids

Release and recovery information for salmonids with coded

wire tags (CWT) collected in the ocean 1981-1985 are

presented in the Appendix. Out of a total of 563 CWT

salmonids recovered, 307 (54%) were juvenile coho salmon

(278 age 1.0 and 29 age 0.01), 63 (11 %) were adult coho

salmon, 185 (33 %) were juvenile chinook salmon (177 age

'Age designation follows that recommended by Koo (1962), where

the numbers before and after the decimal point indicate winters

spent in fresh water and in the ocean, respectively.
12 NOAA Technical Report NMFS 93 _

Table 11

Summary of recoveries of different ages of CWT juvenile salmonids by year.

Coho Chinook

Juve:nile Juvenile Steelhead -_.- ---_..

0.0 1.0 Adult 0.-' 1.0 Adult Juvenile

1981 13 45 21 2 7 0 2

1982 8 79 8 0 34 I 1

1983 5 35 8 1 8 0 0

1984 2 22 8 5 16 2 1

1985 1 97 18 0 112 1 0

Total 29 278 63 8 177 4 4

Columbia River Origin: 0 160 22 5 167 3 2

'Includes both age 0.0 and 0.1 fish.

Table 12

CWT juvenile coho and chinook salmon caught in the ocean recorded by release area.

Release area 1981 1982 1983 1984 1985 Total

Coho

California 0 0 0 0 0 0

Oregon Coast (Pub.) 5 13 8 2 16 44-

Oregon Coast (Priv.) 22 9 22 3 7 63

Columbia River 30 49 10 13 63 165

Washington Coast 1 16 0 5 12 34

Puget Sound 0 0 0 0 0 0

British Columbia 0 0 0 1 0 1

Total 58 87 40 24 98 307

Chinook

California I 0 0 0 0 I

Oregon Coast (Pub.) 1 2 0 0 2 5

Oregon Coast (Priv.) 0 2 0 3 0 5

Columbia River 7 29 8 18 110 172

Washington Coast 0 1 1 0 0 2

Puget Sound 0 0 0 0 0 0

British Columbia 0 0 0 0 0 0

Total 9 34 9 21 112 185

1.0 and 8 age 0.0 and 0.1), 4 (1 %) were adult chinook

salmon, and 4 (1 %) were juvenile steelhead (Table 11).

Almost all (302 of 307) of the CWT juvenile coho salmon

we caught in our purse seines were released from hatcheries

as smolts (age 1. fish released from both public and private

hatcheries and large, accelerated, age O. fish released from

a private hatchery).

The majority (58 %) of age 1.0 juvenile coho salmon and

almost all (94%) of age 1.0 juvenile chinook salmon

recovered in our purse seine sets originated in the Columbia River basin. Many of the ocean-caught CWT adult

coho and chinook salmon, 35 % and 75%, respectively, also

originated in the Columbia River basin. All but one age

0.0 juvenile coho salmon originated at the Oregon AquaFoods Inc. facility on the Oregon coast, while 63 % of age

D.-juvenile chinook salmon originated in the Columbia

River basin. The ratios ofCWT to total juvenile coho and

chinook salmon caught in purse seine sets 1981-1985 were

307/6517 and 185/2085, respectively.

A summary of CWT recoveries of juvenile coho and

chinook salmon by release area and year appears in Table

12. The CWT juvenile coho salmon from the Columbia

River were most numerous in our catches followed by, in

order, those from coastal Oregon private hatcheries, other
__________________ Pearcy and Fisher: Distribution and Abundance ofJuvenile Salmonids 13

Table 13

Estimated numbers (and percentages) in our purse seine catches of juvenile coho salmon released from hatcheries as smolts in

different regions and years. These estimates were calculated by multiplying the numbers of CWT fish we caught that originated

in each region by the ratios of the total number of hatchery smolts released to the total number of CWT smolts released in

the same regions. The total purse-seine catch of juvenile coho salmon in each year and the estimated percentage of this total,

represented by fish released from hatcheries as smolts, are also indicated.

Estimated number of hatchery smolts (% of total)

Release area 1981 1982 1983 1984 1985

California 0 0 0 0 0

Oregon Coast (Public) 32(2.6) 87(6.4) 27(52) 10(2.8) 81 (5.6)

Oregon Coast (Private) 389(32.1) 207(15.2) 362 (696) 66(18.4) 57(3.9)

Columbia River 698(57 7) 815(598) 131 (25.2) 215(602) 1198(82.4)

Washington Coast 91 (7.5) 254(18.6) 0(0.0) 66(185) 118(8.1)

Expanded Total 1210 1363 520 357 1454

Total Catch 1844 1768 604 635 1686

% of Total Catch 66% 77% 86% 56% 86%

coastal Oregon locations and coastal Washington locations.

No CWT juvenile coho salmon released in California or

Puget Sound and only one fish released in British Columbia were caught in our purse seines; perhaps few juveniles

from these areas enter the coastal Oregon and Washington

waters during their first summer in the ocean.

We estimated the contributions of hatchery coho salmon

smolts originating from five sources (California, coastal

Oregon public, coastal Oregon private, Columbia River,

and coastal Washington hatcheries) to our ocean catch in

each year by multiplying the numbers of CWT fish we

caught from each source by an expansion factor. This expansion factor was used for each source in each year:

total no. hatchery.smolts released2

total no. CWT smolts released

Based on these expansions, hatchery coho salmon smolts

accounted for between 56% and 86% (five year average

= 74%) of our total catch ofjuvenile coho salmon in the

ocean (Table 13). The remaining 14-44% (average 26%)

were presumably wild fish or hatchery-reared fish released

as fingerlings. The high percentage of hatchery coho

salmon in our catches is consistent with data presented by

Bottom et al. (1986) showing that in recent years wild

smol ts have decreased to only 8 % or less of total coho

salmon smolt production from California through the

southern Washington coast. Of the hatchery fish, those

2Data on total smolts released in each region were obtained from

Tom Lichatowich, Oregon Department of Fish and Wildlife,

Portland, OR and D. O'Conner, Washington Department of

Fisheries, Olympia, WA; data on total releases of CWT smolts

were obtained fromJ.K. Johnson, Pacific States Marine Fisheries

Commission, Portland, OR.

from the Columbia River were most numerous, followed

by, in order, fish from Oregon private hatcheries, coastal

Washington hatcheries, and coastal Oregon public hatcheries (5-yr means = 57%, 28 %, 11 %, and 5 % of hatchery

fish, respectively).

In most years Columbia River fish were caught at a

higher rate than that region's smolt contribution, probably

because the mouth of the Columbia River was in the middle of the latitudinal range of our sampling, and fish

migrating both to the north and south of the Columbia

River were equally susceptible to capture (Table 14). Conversely, coastal Washington fish were always caught at a

proportionally lower rate than that region's smolt contribution, perhaps because much of our sampling was to the

south of where these fish were released and migration is

known to be primarily to the north, out of our sampling

area. Surprisingly, no CWT juvenile coho salmon released as smolts from California were captured. Likewise, no

Puget Sound smolts were caught during our sampling off

Oregon and Washington, although one juvenile coho

salmon released as a fingerling from a British Columbia

river was captured off northern Washington and 24 adult

coho salmon originating in Puget Sound (38 % of our total

catch ofCWT adult coho salmon) were also caught, mostly

off Washington. These data suggest that few juvenile coho

salmon from California, Puget Sound, or British Columbia migrate into the coastal waters off Oregon and

Washington during their first summer in the ocean.

In early summer, many CWT juvenile coho salmon were

caught to the south of where they entered the ocean. By

late summer, however, most large CWT juvenile coho

salmon (>300mm FL) that originated in Oregon or in the

Columbia River and that grew in the ocean for a period

of several months following release, were caught off northern Oregon and Washington. This suggests that although
14 NOAA Technical Report NMFS 93 _

Table 14

Estimated percentage contribution to our purse-seine catches of juvenile coho salmon that originated from hatcheries in each

of five areas, and (in parentheses) the percentage contribution of each area to the total release of smolts from California through

the Washington coast in different years.

Coastal Oregon Coastal Oregon

California (Private) (Public) Columbia River Coastal Washington

1981 0(1.3) 321 (31.8) 2.6(5.2) 57.7(43.8) 7.5(18.0)

1982 0(0.7) 15.2(33.1) 6.4(6.2) 59.8 (39. 7) 186(20.3)

1983' 0(1.2) 69.6(28.3)' 5.2(53) 25.2(47.9) 0(17.3)

1984 0(0.5) 18.4(18.4) 2.8(7.6) 60.4(51.4) 185(22.1)

19856 0(0.2) 0(16.2) 5.7(7.3) 92.9(53.6) 1.4(22.7)

1985' 0(0.2) 7.9 (16.2) 5.7(7.3) 71.3 (53.6) 15.0(227)

1981-1984 (mean) 0(0.9) 338(279) 4.3(6.1) 50.8 (45. 7) 11.2(19.4)

'We probably overestimated the proportion of coastal Oregon ::>rivate hatchery fish in our catches in 1983. In this year many of the CWT private

hatchery fish were caught in three sets close to where the fish were released, and were from a single release group that included a very high

percentage of tagged fish. Therefore the expansion factor we used to estimate total numbers of private hatchery fish in our sets, which was

based on the average marked to unmarked ratio for all private hatchery groups released during the year, was probably too high.

6Sampling near the mouth of the Columbia River from late May to early June 1985.

'Coastwide sampling, but in June only.

there is slow movement to the north during the summer,

many coho salmon do not rapidly migrate far away from

where they entered the ocean but linger in the local area.

(See Pearcy and Fisher 1988 for more details.) Most CWT

chinook salmon were caught to the north of where they

entered the ocean, especially during the warm water years

of 1983 and 1984 (Fisher and Pearcy, unpub!. manuscr.).

During other years some fish from the Columbia River

were captured south of where they entered the ocean, and

in May 1982 most Columbia River chinook salmon smolts

were captured south of the Columbia River, similar to the

pattern found for juvenile coho salmon.

Acknowledgments

We thank Alton Chung, Waldo Wakefield, Jon Shenker,

Dean Gushee, and Craig Banner for their hard work at

sea collecting samples, and Ric Brodeur, Allan Hartt, and

an anonymous reviewer for comments on the manuscript.

This research was made possible by the Northwest and

Alaska Fisheries Center and the Northwest Fisheries

Research Center (NA85-ABH-00025; NA85-ABH-00014;

NA88-ABH-00043) and Oregon State University Sea

Grant College Program (NA81-AA-D-00086, R/OPF-17).

Citations _

Bottom, D.L., T.E. Nickelson, and S.L. Johnson.

1986. Research and development of Oregon's coastal salmon stocks.

Coho salmon model. Oregon Dep. Fish. Wildl. Ann. Prog. Rep.,

29 p.

Brodeur, R.D.

1989. Neustonic feeding by juvenile-salmonids in coastals waters

of the ortheast Pacific. Can. J. Zool. 67:1995-2007.

1990. Ontogenetic variations in the type and size of prey consumed

by juvenile coho, Oncorhynchus kisutch, and chinook, O. tschwytscha

salmon. Env. BioI. Fishes (in press).

Brodeur, R.D., and W.G. Pearcy.

1986. Distribution and relative abundance of pelagic nonsalmonid

nekton off Oregon and Washington, 1979-84. NOAA Tech.

Rep. NMFS 46, 85 p.

1987. Die! feeding chronology, gastric evacuation and estimated

daily ration of juvenile coho salmon, Oncorhynchus kisutch (Walbaum), in the coastal marine environment. ]. Fish. BioI. 31:

465-477 .

Brodeur, R.D., W.G. Pearcy, and H.Y. Lorz.

1987a. Food habits and dietary variabilities of pelagic nekton off

Oregon and Washington, 1979-1984. NOAA Tech. Rep. NMFS

57,32 p.

Brodeur, R.D., B.C. Mundy, W.G. Pearcy, and R.W. Wissmar.

1987b. The neustonic fauna in coastal waters of the Northeast

Pacific: abundance, distribution, and utilization by juvenile salmonids. Oregon State Univ., Sea Grant Publ. ORESU-T-87-

001,61 p.

Chung, A.W.

1985. Relationships between oceanographic factors and the distribution of juvenile coho salmon (Oncorhynchus kisutch) off Oregon

and Washington. M.S. Thesis, Oregon State Univ., 116 p.

Fisher, J.P., and W.G. Pearcy.

1988. Growth ofjuvenile coho salmon (Oncorhynchus kisutch) in the

ocean off Oregon and Washington, USA, in years of differing

coastal upwelling. Can. J. Fish. Aquat. Sci. 45:1036-1044.

Giger, R.D.

1972. Ecology and management of coastal cutthroat trout in Oregon. Oregon State Game Comm., Fish. Res. Rep. No.6, 61 p.

Hartt, A.C., and M.B. Dell.

1986. Early oceanic migrations and growth of juvenile Pacific

salmon and steelhead trout. Int. Pac. Fish. Comm. Bull. 46,

105 p.
___________________ Pearcy and Fisher: Distribution and Abundance of Juvenile Salmonids 15

Healey, M.C.

1980. The ecology of juvenile salmon in Georgia Strait, British

Columbia. In Salmonid ecosystems of the North Pacific (W.J.

McNeil and D.C. Himsworth, eds.), p. 203-229. Oregon State

Univ. Press, Corvallis.

Koo, T.S.Y.

1962. Age designation in salmon. In Studies of red salmon (T.S.Y.

Koo, ed.), p. 41-48. Univ. Washington Press, Seattle.

Landry, M.R.,J.R. Postel, W.K. Peterson, andJ. Newman.

1989. Broad-scale distributional patterns of hydrographic variables on the Washington/Oregon shelf. In Coastal oceanography of Washington and Oregon (M.R. Landry and E.M.

Hickey, eds.), p. 1-40. Elsevier Oceanography Series 47,

Amsterdam.

Nicholas, J.W., and D.G. Hankin.

1988. Chinook salmon populations in Oregon coastal river basins:

Description oflife histories and assessment of recent trends in run

strengths. Oregon Dep. Fish Wildl. Res. Develop. Sect., Info.

Rep. 88-1, 359 p.

Nickelson, T.

1986. The influence of ocean conditions on abundances of coho

salmon (Oncorhynchus kisutch) in the Oregon Production Area.

Oregon Dep. Fish Wildl. Info. Rep. 83-6, 23 p.

Paszkowski, C.A., and B.L. Olla.

1985. Social interactions of coho salmon (Oncorhynchus kisulch) smolts

in seawater. Can. J. Zool. 63:2401-2407.

Pearcy, W.G.

1984. Where do all the coho go? The biology ofjuvenile coho salmon

off the coasts of Oregon and Washington. In Influence of ocean

conditions on the production of salmonids in the North Pacific

(W.G. Pearcy, ed.), p. 50-60. Oreg. State Univ. Sea Grant Coli.

Prog. (ORESU-W-83-001), Corvallis.

1988. Factors affecting survival of coho salmon off Oregon and

Washington. In Salmon production, management, and allocation (M.J. McNeil, ed.), p. 67-73. Oregon State Univ. Press,

Corvallis.

Pearcy, W.G., and J.P. Fisher.

1988. Migrations of coho salmon, Oncorhynchus kisutch during their

first summer in the ocean. Fish. Bull., U.S. 86:173-195.

Pearcy, W.G., and A. Schoener.

1987. Changes in the marine biota coincident with the 1982-1983

El Nino in the northeastern subarctic Pacific Ocean. J. Geophys.

Res. 92, No. CI3:14,417-14,428.

Pearcy, W., J. Fisher, R. Brodeur, and S. Johnson.

1985. Effects of the 1983 El Nino on coastal nekton offOregon and

Washington. In El Nino North (W.S. Wooster and D.L. Fluharty, eds.), p. 188-204. Univ. Washington Sea Grant Prog.,

Seattle.

Pearcy, W.G., R.D. Brodeur, and J.P. Fisher.

In press. Distribution and ecology ofjuvenile cutthroat trout (Oncorhynchus clarki clarki) and steelhead (0. mykiss) in the ocean off

Oregon and Washington. Fish. Bull., U.S.

Peterson, W.T., R.D. Brodeur, and W.G. Pearcy.

1982. Food habits ofjuvenile salmon in the Oregon coastal zone,

June 1979. Fish. Bull., U.S. 80:841-851.

Shenker, J.M.

1984. Scyphomedusae in surface waters near the Oregon coast,

May-August, 1981. Est. Coast Shelf Sci. 19:619-632.
16 NOAA Technical Report NMFS 93 _

,-----------------------------------------------,

OREGON

S. WASHINGTON -

WASHINGTON

46° N. OREGON

____,QUINAULT R.

FOUR MILE CREEK

COOS BAY

SIUSLAW RIVER

YAQUINA HEAD

YACHATS

CAPE LOOKOUT

NEHALEM BEACH

• - - - - - - - - TILLAMOOK- - - - - - - - - - - - - - BAY

WECOMA BEACH

SEASIDE

QUINAULT RIVER

CAPE DISAPPOINTMENT

DESTRUCTION ISLAND

WAATCH POINT

GRAYS HARBOR

WILLAPA BAY

SEA LION ROCK

Figure 1

Transects frequently sampled during purse-seine cruises, 1981-1985, and the three regions used for grouping of

data in Table 2.
______________ Pearcy and Fisher: Distribution and Abundance ofJuvenile Salmonids 17

A

JUVENILE COHO

+ 1 set with 326-330 fish

0

0 21- 51- 81- 111 - 141- 171-

25 55 85 115 145 175

B

n=549 JUVENILE CHINOOK 300 [J

250

"

"

III

,,~

I- 200 '\f'\

LaJ '-1'\ III

..... ",- 0 150

LaJ

""

'\"

1Il "'\

::::> 100

z

'-"

""

50 '-"

"'\1'\ + 1 set with 336-340 fish

'-"I'\~

0 "

0 21- 51- 81- 111 - 141- 171-

25 55 85 115 145 175

NUMBER OF FISH IN SET

300 n=396

250

III

ILaJ 200

III

.....

0 150

LaJ

1Il

:::>

z

Figure 2

Frequency distributions of the number ofjuvenile coho (A) and chinook salmon (B) caught in purseseine sets, 1981-1985.
18 NOAA Technical Report NMFS 93 _

1985

SALINITY (Ojoo) TEMP (OC) CHL-A (ug/l)

WILLAPA

BAY

• ••• YACHATS

<1

.. D· SIUSLAW R.

...J • • • • SEA LION ROCK SEA LION ROCK

••• DESTRUCTION IS.

33

32· ••

( .....

L- --...J

Figure 3

Near-surface (0-1 m) salinity, temperature, and chlorophyll-a distributions off Oregon and Washington, 10-25 June 1985. Dots indicate

locations of purse-seine sets.
_________________ Pearcy and Fisher: Distribution and Abundance of Juvenile Salmonids 19

COHO -1981

'. +0+0- '.

~. YAQUINA BAY

+++0++ ' .~.

>31

JUNE

125° 124°

TTl I ~Ilil

.' CAPE FlAnERY .i

MAY

124°

45°

SCALE

+ -0

0 -1-10

0 -II-50 .,

44°

0 -51-100

0 >100

Figure 4A

Catch distribution (number/set) ofjuvenile coho salmon off Oregon and Washington for each cruise. Sampling

was extended to British Columbia and California in 1984. The 26 and 32"/00 surface isohaline lines are also indicated as well as areas where the surface temperature was 10.0 °C (shaded).
20 NOAA Technical Report NMFS 93 _

COHO -1981

JULY AUGUST

124°

45° .....

'" 45° Looo

SCALE .. ' ooo~

+ -0

0 -1-10

0 -11-50

44° 44° +

0 -51-100

0 )100

Figure 4B
_______________ Pearcy and Fisher: Distribution and Abundance of Juvenile Salmonids 21

COHO -1982

JUNE

124°

< 31

+0+

0+

0+0

MAY

124°

+ +

+ t o~ \ CAP~,~~~ER.:,:i

+~ .

< 31 },

SCALE

+ -8

0 -1-18

0 -11-:58 44° 44°

0 -:51-188

0 >188

Figure 4C
22 NOAA Technical Report NMFS 93 _

COHO -1982

SEPTEMBER

SCALE

+ -0

o -1-10

o -ii-50

o -51-100

o )100

/'~~oOD

26

,~>31

0+ G) ~>.

:~.,

Figure 4D
_______________ Pearcy and Fisher: Distribution and Abundance of Juvenile Salmonids 23

COHO - 1983

MAY JUNE

+ 00

>31

++ + +

< 31

45° 45°

SCALE

+ -Ill

0 -1-t8

0 ·11-:18

44°

0 44°

-:11-188

0 )188

Figure 4E
24 NOAA Technical Report NMFS 9.3 _

COHO -1983

SEPTEMBER

+

>31

>31

++

< 31

,CAPE FLAnERY /

+ 0 oO~ :t-,. - I r •••.•

i.,. ..~ "1.',.,-., .• ,.':~"! ....."=O_,,.-_\ • ~~

SCALE

+ -0

0 -1-10

0 -11-:50 44°

0 -:51-100

0 >100

Figure 4F
________________ Pearcy and Fisher: Distribution and Abundance of Juvenile Salmonids 25

COHO -1984

I >31 .. CAPE FLATTERY

+ \:. + j'"

31< ..:"",",."':".-..""' ...'>' ..,"-'"-",,._ _.-..-I

+ + 00

SEPTEMBER

.......

.•.. ~.-.:: .. ~.-.":~.,...__-","rC

"'~ .. ". ":".

+ 0 0 + .,

~;

+o+cP',

'" YAOUINA BAY + /..

++0

+0+ +

++ie

+ oaD

>31

>31

SCALE

+ -0

0 -1-10

0 -11-50 ., ++00+"

0 -51-100 >31

0 >100

Figure 4G
26 NOAA Technical Report NMFS 93 _

~------------------_._--------,

COHO -1984

JULY

SCALE

>31

L- ._.

+

o

o

o

o

o

1-10

11-50

51-100 >31

)100

Figure 4H
_______________ Pearcy and Fisher: Distribution and Abundance ofJuvenile Salmonids 27

COHO -1985

MAY 29 - JUNE 5 JUNE 10 - 25

< 31

+ 0 oe()oo

~~+o 1...26l.f-N .:

.~ ...

+ of

......

M J

SCALE

+ 0

0 1-10

0 11-50 44°

0 51-100

0 )100

Figure 41
28 NOAA Technical Report NMFS 93 _

CHINOOK - 1981

JUNE

124°

MAY

45°

SCALE

+ -0

0 -1-10

0 -11-50

0 -51-100 ofOi 44°

0 )100

Figure 5A

Catch distribution ofjuvenile chinook salmon off Oregon and Washington for each cruise. Sampling was extended

to British Columbia and California in 1984. The 26 and 32°/00 surface isohaline lines are also indicated as well as

areas where the surface temperature was lO.O°C (shaded).
________________ Pearcy and Fisher: Distribution and Abundance ofJuvenile Salmonids 29

CHINOOK - 1981

JULY AUGUST

~.

\.

i.

+ ·e

0

a >31

0 + 44°

0

Figure 5B
30 NOAA Technical Report NMFS 93 _

CHINOOK - 1982

JUNE

124°

MAY

124°

..- .

..~~,..•. ""...""....""::.,i"">.-.~ _~

< 31

45°

>31

SCALE

+ aQ

0 .. t~tQ

0 -11-:10

0 -:11-1011 44°

0 >lQQ

Figure 5C
_______________ Pearcy and Fisher: Distribution and Abundance ofJuvenile Salmonids 31

CHINOOK - 1982

SEPTEMBER

1250

>31

;:,\:

/~ ,<',

~OLUMBlAR•

.,\: + + +"

>31

SCALE

+ -e

0 -1-1e

0 -11-:5e

0 -:51-lee 440

0 >lee

Figure 5D
32 NOAA Technical Report NMFS 93 _

CHINOOK - 1983

SCALE

+ -8

0 -1-18

0 -11-:58

0 -:51-188

0 >188

< 31

MAY

1240

0+

< 31

++

JUNE

1240

,CAPE FLATTERY.';

+0 + + }

}

Figure 5E
________________ Pearcy and Fisher: Distribution and Abundance ofJuvenile Salmonids 33

CHINOOK - 1983

SEPTEMBER

,CAPE FLATTERY

.+++++O! ,. .

.~. ;.~".,~..-... ,-,- .:.'

>31

45°

SCALE

+ -0

0 -1-10

0 -11-:50

0 -:51-100 44°

0 >100

Figure 5F
34 NOAA Technical Report NMFS 93 _

CHINOOK - 1984

OOoao

+ + 00

>31

l,

+++iO;.

•• YAQUINA BAY + ..

++t- +

+ + ++0

SEPTEMBER

>31 +0+

+of

o ~oo '0 t -~ •.••• {'\J , . •

(j COLUMBIA R. + 0 c5' -'

+000

':::

+00+

JUNE

1240

< 31 00+

SCALE

+ -0

0 -1-10

0 -11-:50

0 -:51-100

0 >100 >31

Figure 5G
_____________ Pearcy and Fisher: Distribution and Abundance of Juvenile Salmonids 35

CHINOOK - 1984

JULY

43°

SCALE

+ 0

0 1-10 42°

0 11-50

0 51-100

0 >100 41°

Figure 5H
36 NOAA Technical Report NMFS 93 _

CHINOOK - 1985

JUNE 10 - 25

124°

-31

>31

+ + oaoOo

MAY 29 - JUNE 5

< 31

45°

SCALE

+ 0

0 1-10

44°

0 11-50

0 51-100

0 )100

43°

Figure 51
_________________ Pearcy and Fisher: Distribution and Abundance ofJuvenile Salmonids 37

CHUM -1981

SCALE

+ 0

0 1-10

0 11-50

0 51-100

0 >100

MAY

1240

JUNE

1240

Figure 6A

Catch distribution of juvenile chum salmon off Oregon and Washington for each cruise. Sampling was extended

to British Columbia and California in 1984.
38 NOAA Technical Report NMFS 93 _

CHUM -1981

AUGUST

+ + ++++ -

.'

+ + eQl-+ .... :~ YAQUINA BAY

SCALE

+ 0

0 1-10

0 11-50

0 51-100

0 )100

Figure 6B
________________ Pearcy and Fisher: Distribution and Abundance ofJuvenile Salmonids 39

CHUM -1982

e+

JUNE

+ + ..

++ .....

+00++

+ + +

+ + +

MAY

124°

+

+ + ....

++

++ +

+ + +

+ ++

SCALE

+ 0 44°

0 1-10

0 11-50

0 51-100

0 )100

43°

Figure 6C
40 NOAA Technical Report NMFS 93 _

CHUM -1982

SEPTEMBER

45°

SCALE t':"

+ 0 + + .;'

.~

0 1-10 ,

"' 44°

0 11-50

0 51-100

0 )100

43°

Figure 6D
________________ Pearcy and Fisher: Distribution and Abundance of Juvenile Salmonids 41

CHUM -1983

•

JUNE

+ ++

+ 0 +

++

MAY

124°

++

SCALE

+ 0 44°

0 1-10

0 11-50

0 51-100

0 )100

43°

Figure 6E
42 NOAA Technical Report NMFS 93 _

CHUM -1984

JUNE

1240

+++ .....

+ + + +

+ + + +

++

SCALE + + +

+ a

0 1-10

0 11-50

0 51-100

0 ) 100

SEPTEMBER

+0. 0

000"'+

+

+++...-+',

" YAQUINA BAY +

l.- . _

Figure 6F
______________ Pearcy and Fisher: Distribution and Abundance ofJuvenile Salmonids 43

CHUM -1984

JULY

" SCALE

... a 42°

" "0" 0 1-10

0 11-50

"0.0 0 51-100 " 41°

0 )100

"0$"

47°

124°

Figure 6G
44 NOAA Technical Report NMFS 93 _

CHUM -1985

.;

+ + .,. ++ ,:'

~' YAQUINA BAY

°++0

000

JUNE 10 - 25

1250 1240

+000

MAY 29 - JUNE 5

1250 1240 1230

SCALE

+ 0

0 1-10

0 11-50

0 51-100

0 )100

Figure 6H
_________________ Pearcy and Fisher: Distribution and Abundance ofJuvenile Salmonids 45

PINK -1981

JUNE

1240

;

,.

+++t+++ .,'

MAY

1240

SCALE

+ a 440

0 1-10

0 11 L50

0 51-100

0 )100

430

Figure 7A

Catch distribution of juvenile pink salmon off Oregon and Washington for each cruise. Sampling was extended

to British Columbia and California in 1984.
46 NOAA Technical Report NMFS 93 _

PINK - 1982

SEPTEMBER

1250 1240 1230

+

PINK - 1981

JULY

1240

SCALE

+ a 440

0 1-10

0 11-50

0 51-100

0 >100 430

L- .__. ..__ . . . --l

Figure 7B
______________ Pearcy and Fisher: Distribution and Abundance ofJuvenile Salmonids 47

PINK -1984

JULY

Figure 7C
48 NOAA Technical Report NMFS 93 _

PINK -1984

SEPTEMBER

+0+

+++ +

+ +&+

+

SCALE

+ 0 44°

0 1-10

0 11-50

0 51-100

0 >100

43°

Figure 7D
_________________ Pearcy and Fisher: Distribution and Abundance ofJuvenile Salmonids 49

SOCKEYE - 1981

JUNE

1240

+ + + +++t+ .~.

~' YAQUINA BAY

SCALE

+ 0

0 1-10

0 11-50

0 51-100

0 )100

Figure SA

Catch distribution ofjuvenile sockeye salmon off Oregon and Washington for each cruise. Sampling was extended

to British Columbia and California in 1984.
50 NOAA Technical Report NMFS 93 _

SOCKEYE - 1981

JULY

124°

..

45°

SCALE

.. 0

0 1-10

44°

0 11-50

0 51-100

0 )100

43°

Figure 8B
_______________ Pearcy and Fisher: Distribution and Abundance of Juvenile Salmonids 51

SOCKEYE - 1982

..

+ ..

..

+

+ +.... +

.. 0 +

SEPTEMBER

1250

JUNE

1240

SCALE

.. a 440

0 1-10

0 11-50

0 51-100

0 )100

430

Figure 8e
52 NOAA Technical Report NMFS 93 _

---~----------------,

SOCKEYE - 1983

JUNE

124°

MAY

+8++

+ +

++

SCALE

+ 0 44° 0 1-10

0 11-50

0 51-100

0 )100

43°

----------------------------------'

Figure 8D
________________ Pearcy and Fisher: Distribution and Abundance of Juvenile Salmonids 53

SOCKEYE - 1984

JULY

1280

45°

++

SCALE

+ 0

1-10

47° 0

0 11-50

0 51-100

0 )100

43°

Figure BE
54 NOAA Technical Report NMFS 93 _

SOCKEYE - 1985

MAY 29 - JUNE 5

1250 1240 1230

SCALE

+ 0

0 1-10

0 11-50

0 51-100

0 )100

Figure 8F

JUNE 10 - 25

1250 1240

+ 0 +

+ + + +

+ + .. ++ .;,

", YAQUINA BAY 1,'
_________________ Pearcy and Fisher: Distribution and Abundance ofJuvenile Salmonids 55

STEELHEAD - 1981

JUNE

1240

MAY

1240

SCALE .,

\

::

;

+ a -t+ ;. 440

0 1-10

0 11-50

0 51-100

0 )100

430

Figure 9A

Catch distribution ofjuvenile steelhead ofT Oregon and Washington for each cruise. Sampling was extended to British

Columbia and California in 1984.
56 NOAA Technical Report NMFS 93 _

STEELHEAD - 1981

AUGUST

-------------------'

Figure 9B
________________ Pearcy and Fisher: Distribution and Abundance of Juvenile Salmonids 57

STEELHEAD - 1982

JUNE

1240

++ ....

+ + •

+ + Gl

+ + +

,!

+00" .:

SCALE

+ a + 44°

0 1-10

0 11-50

0 51-100

0 )100

43°

Figure 9C
58 NOAA Technical Report NMFS 93 _

+ 0 ++

......

STEELHEAD - 1983

JUNE

1240

MAY

1240

......

... ... Ot-

......

SCALE

... 0 ... ++ 440

0 1-10

0 11-50

0 51-100

0 )100

430

Figure 9D
________________ Pearcy and Fisher: Distribution and Abundance of Juvenile Salmonids 59

STEELHEAD - 1984

......

SCALE ... ... +

+ a 44°

0 1-10

0 11-50

0 51-100

0 )100

43°

Figure 9E
60 NOAA Technical Report NMFS 93 _

----------------------,

STEELHEAD - 1984

JULY

Figure 9F
_______________ Pearcy and Fisher: Distribution and Abundance of Juvenile Salmonids 61

STEELHEAD - 1985

+ 0 ... ++ ..'.

t YAQUINA BAY

+ + + +

JUNE 10 - 25

+ + +

+++ .... +++ +

00

MAY 29 - JUNE 5

1250 1240

SCALE

+ 0 440

0 1-10

0 11-50

0 51-100

0 )100

43°

Figure 9G
62 NOAA Technical Report NMFS 93 _

..-------------------------_._--------------------,

CUTTHROAT - 1981

MAY

1240

SCALE

+ a 440

0 1-10

0 11-50

0 51-100

0 )100

._----_._----------

Figure lOA

Catch distribution of cutthroat trout off Oregon and Washington for each cruise. Sampling was extended to British

Columbia and California in 1984.
________________ Pearcy and Fisher: Distribution and Abundance ofJuvenile Salmonids 63

CUTTHROAT - 1981

AUGUST

1250 1240

JULY

1240

+

SCALE

+ 0 + 440

0 1-10

0 11-50

0 51-100

0 )100

Figure lOB
64 NOAA Technical Report NMFS 93 _

CUTTHROAT -1982

JUNE

1240

+

MAY

1240

+ + ...

++

++ +

+ + +

+ ++

SCALE

+ 0 440

0 1-10

0 11-50

0 51-100

0 ) 100

430

Figure tOe
________________ Pearcy and Fisher: Distribution and Abundance of Juvenile Salmonids 65

CUTTHROAT -1983

JUNE

124°

+ ++

+ + +

++

MAY

124°

+0

+ + + +

++ 45°

+0

. SCALE .-:

0+ '" + 0+ 1.

+ a 44° 0 1-10

0 11-50

0 51-100

0 ) 100

43°

Figure 10D
66 NOAA Technical Report NMFS 93 _

CUTTHROAT -1984

JUNE

45°

++

SCALE

+ 0

0 1-10

0 11-50

0 51-100

0 )100

43°

Figure IDE
______________ Pearcy and Fisher: Distribution and Abundance ofJuvenile Salmonids 67

CUTTHROAT -1984

JULY

" SCALE

+ 0 42°

" " 1-10 "" 0

0 11-50

0 51-100

41° 0 )100

"" "0

47°

124°

Figure 10F
68 NOAA Technical Report NMFS 93 _

CUTTHROAT -1985

, 00 .. ++ :.

t YAQUINA BAY

0+ + +

+ + +

JUNE 10 - 25

1250 1240

-t-++++++ +

MAY 29 - JUNE 5

1250 1240 1230

SCALE

+ a 440

0 1-10

0 11-50

0 51-100

0 )100

430

Figure lOG
_______________ Pearcy and Fisher: Distribution and Abundance of Juvenile Salmonids 69

.AVERAGE CHLOROPHYLL-A VS.AVERAGE CATCH/SET

IN MAY AND JUNE

20

15

•

Iw

(f)

'-....

I 10

u

I-«

u

5

••

0

0 2 3 4 5

CHLOROPHYLL-A (fJg/l)

Figure 11

Average chlorophyll-a concentration at the surface during the May and June cruises combined

vs. average catch/set of juvenile coho during those same cruises.
'I

CHUM 0

1983 1984

1981 1982 20, 60 2,)1 MAY J,) JUNE

50 30 ro '6~ I I MAY MAY 20 (")

U . 12~ II 1~ 20 ~.

10 1,) """""

20 10

10 ,) ,) -g

.., o 0 0 ,.,.

160 200 240 no 320 80 120 160 200 240 280 320 ao 120 160 200 240 280 320 80 120 160 200 240 280 320 Z

a::

20, 60 23 JUNE ::J JULY I ,,~JUNE >0 JUNE 20 n \D 23 HI .0 12~ 1~ 20

n 10 "

.j

O~

II rf1L:: 10

01 PI'P 0 aD 120 160 200 240 2110 )20 ao 120 160 200 240 2&0 320 aD 120 160 200 240 280 320 ao 120 160 200 240 2eo 320

1985

20] 60 SEPTEMBER 'OJ MAY 29 - JUNE 5 ", SEPTEMBER

Z COLUMBIA RIVER PLUME )0

..12 ,..., ~,..• JO"I "

20

'0 20 13

20 '0

10 10

01 'II"~'"~ 0 0 cf1-.rJ 0

eo 120 160 200 240 2eo )20 !O 120 1&0 200 240 2110 )20 80 120 160 200 240 2ao 3'20 aD 120 160 200 140 280 )20

20, 501 ,..., JUNE

"1 AUGUST '0

" n 20

'0

e I ' J I ' , , , ! 0

ao 120 160 200 240 2ao 320 eo 120 , 60 200 240 2ao ,no

FL(mm)

Figure 12

Length-frequency distributions of juvenile chum salmon in purse seine catches in different months and years, all transects combined.
_________________ Pearcy and Fisher: Distribution and Abundance ofJuvenile Salmonids 71

PINK

1982 1984

20 SEPTEMBER 140 JULY

120

15 100 r80

10

60

5 40

20

r.r..1

c:::: 0 0 J n~ 80 120 160 200 240 280 320 80 120 160 200 240 280 320

;;E

:J 140 SEPTEMBER Z

120

100

80

60

40

20

0 .rr IL

80 120 160 200 240 280 320

FL(mm)

Figure 1.'3

Length-frequency distributions ofjuvenile pink salmon during September 1982 andJuly and September 1984, when the largest catches

occurred, all transects combined.
72 NOAA Technical Report NMFS 93 _

SOCKEYE

.J()

2~

MAY

20

1~

10

5

o r f-n

80 120 160 200 240 280 320

30

25

JUNE

0::: 20

W

o::l 15

10

Z

5

0 I rLn.

80 120 160 200 240 280 320

30

25

JULY

20

15

10

5

0 ~nn 80 120 160 200 240 280 320

FL(mm)

_.

Figure 14

Length-frequency distributions of sockeye salmon in different months.

Catches in all years and transects have been combined.
Pearcy and Fisher: Distribution and Abundance of Juvenile Salmonids 73

Appendix

Salmonids tagged with coded wire collected in purse seines, 1981-1985.

Abbreviations of tagging agencies stand for the following:

ANAD Anadromous Inc. OAF Oregon Aqua Foods, Inc.

CDFG California Department of Fish and Game ODFW Oregon Department of Fish and Wildlife

CDFO Canada Department of Fisheries and Oceans QDNR Quinault Department of Natural Resources

COOP Washington Department of Fisheries-Cooperative SQAX Squaxin Indian Tribe

DOMS Domsea Farms, Inc. TULA Tulalip Indian Tribe

FWS U.S. Fish and Wildlife Service UI University of Idaho-FWS Cooperative

HOH Hoh Indian Tribe UW University of Washington

IDFG Idaho Department of Fish and Game WDF Washington Department of Fisheries

NMFS National Marine Fisheries Service YAKI Yakima Indian Tribe

Abbreviated with hatcheries:

M Fish caught in Columbia River at this location and released downstream.

NFH National Fish Hatchery

Release data Recovery data

Tag code Species Brood year Agency Hatchery Set Latitude Longitude Date Length (mm)

1981

031733 chinook 80 NMFS McNary (M) 228 46 09.5 124 06.4 08/12/81 137

066109 chinook 79 CDFG Trinity R. 16 44 25.0 124 19.0 05/18/81 290

072220 chinook 79 ODFW McKenzie 57 46 35.0 124 11.1 OS/23/81 277

072222 chinook 79 ODFW McKenzie 151 4610.2 124 08.8 07/11/81 206

072229 chinook 79 ODFW Rock Creek 122 43 11.4 12429.6 06/16/81 295

072253 chinook 79 ODFW Marion Forks 65 46 09.0 12420.1 OS/22/81 185

072254 chinook 79 ODFW Marion Forks 183 45 55.0 12420.2 07/14/81 214

102236 chinook 79 IDFG Rapid R. 26 44 51.5 12414.6 05/19/81 145

632251 chinook 80 WDf Washougal 164 46 19.9 124 14.4 07/12/81 91

050638 coho 78 FWS Willard 7 44 38.1 124 17.7 05/16/81 514

050739 coho 79 HOH Chalaat Cr. 30 45 55.1 124 12.5 OS/20/81 143

050826 coho 79 FWS Eagle Cr. NFH 30 45 55.1 124 12.5 05120/81 153

050826 coho 79 FWS Eagle Cr. NFH 90 46 10.0 124 20.8 06/11/81 173

050827 coho 79 FWS Eagle Cr. NFH 30 45 55.1 124 12.5 OS/20/81 150

050828 coho 79 FWS Eagle Cr. NFH 30 45 55.1 124 12.5 05120/81 154

050828 coho 79 FWS Eagle Cr. NFH 230 45 55.3 12427.2 08/13/81 286

050828 coho 79 FWS Eagle Cr. NFH 35 46 10.0 12428.0 05121/81 144

072033 coho 78 ODFW Sandy 56 4635.1 124 13.5 05123/81 455

072113 coho 79 ODFW Big Creek 6 44 38.1 124 17.6 05/16/81 146

072117 coho 79 ODFW Big Creek 17 44 25.1 124 26.0 05/18/81 142

072118 coho 79 ODFW Big Creek 47 46 20.0 12425.4 OS/22/81 154

072122 coho 79 ODFW Big Creek 91 46 10.6 124 20.0 06/11/81 177

072123 coho 79 ODFW Big Creek 190 44 38.6 124 19.6 07/17/81 186

072125 coho 79 ODFW Big Creek 91 46 10.6 12420.0 06/11/81 153

072130 coho 79 ODFW Cascade Creek 83 46 09.9 12420.3 06/11/81 183

072132 coho 79 ODFW Cascade Creek 164 46 19.9 124 14.4 07/12/81 138

072132 coho 79 ODFW Cascade Creek 198 44 51.2 124 16.3 07/18/81 156

072132 coho 79 ODFW Cascade Creek 247 44 38.2 12424.7 08/15/81 202

072238 coho 79 ODFW Big Creek 234 45 55.7 12407.9 08/13/81 188

072256 coho 79 ODFW Sandy 30 45 55.1 124 12.5 OS/20/81 146

72257 coho 79 ODFW Sandy 77 46 20.1 124 18.3 06/10/81 190

072262 coho 79 ODFW Sandy 30 45 55.1 124- 12.5 OS/20/81 140

072262 coho 79 ODFW Sandy 30 45 55.1 124 12.5 05120/81 136

072313 coho 79 ODFW Butte Falls 91 46 10.6 124 20.0 06/11/81 200

072315 coho 79 ODFW Nehalem 21 4451.5 124 12.5 OS/20/81 172

072316 coho 79 ODFW Nehalem 25 44 50.8 124 20.2 05/19/81 151

072323 coho 79 ODFW Siletz 10 44 38.3 124 17.8 05/18/81 150

072357 coho 80 ODFW Cedar Cr. 226 4610.1 124 18.3 08/12/81 163

600362 coho 80 OAF Oregon Aqua-Foods 243 44 38.3 12406.3 08/15/81 138

603153 coho 79 OAF Oregon Aqua-Foods 7 44 38.1 124 17.7 05/16/81 437

603218 coho 80 OAF Oregon Aqua-Foods 231 45 55.2 124 19.7 08/13/81 203

603343 coho 79 OAF Oregon Aqua-Foods 83 46 09.9 124 20.3 06/11/81 495
74 NOAA Technical Report NMFS 93

Appendix (continued)

Release data Recovery data

Tag code Species Brood year Agency Hatchery Set Latitude Longitude Date Length (mm)

1981 (continued)

603347 coho 79 OAF Oregon Aqua-Foods 15 44 25.0 124 15.1 05/18/81 140

603354 coho 80 OAF Oregon Aqua-Foods 127 43 31.7 124 15.8 06117/81 121

603354 coho 80 OAF Oregon Aqua-Foods 180 45 55.4 12408.2 07/13/81 161

603360 coho 80 OAF Oregon Aqua-Foods 104 44 40.0 12431.7 06/14/81 124

603361 coho 80 OAF Oregon Aqua-Foods 190 44 38.6 124 19.6 07117/81 167

603361 coho 80 OAF Oregon Aqua-Foods 191 44 38.2 12420.3 07117/81 181

603361 coho 80 OAF Oregon Aqua-Foods 234 45 55.7 12407.9 08/13/81 191

603403 coho 80 OAF Oregon Aqua-Foods 243 44 38.3 12406.3 08/15/81 144

603411 coho 80 OAF Oregon Aqua-Foods 190 44 38.6 124 19.6 07117/81 153

603412 coho 80 OAF Oregon Aqua-Foods 193 44 38.2 124 25.1 07117/81 139

603425 coho 80 OAF Oregon Aqua-Foods 191 44 38.2 12420.3 07117/81 170

622205 coho 79 ANAD Anadromous, Inc. 127 43 31.7 124 15.8 06/17/81 173

622205 coho 79 ANAD Anadromous, Inc. 275 4401.2 124 13.2 08/19/81 337

622405 coho 79 ANAD Anadromous, Inc. 180 45 55.4 12408.2 07/13/81 195

622605 coho 79 ANAD Anadromous, Inc. 124 43 21.5 12424.4 06/16/81 156

622605 coho 79 ANAD Anadromous, Inc. 177 45 55.0 12408.2 07/13/81 223

622705 coho 79 ANAD Anadromous, Inc. 127 43 31.7 124 15.8 06/17/81 169

622804 coho 79 ANAD Anadromous, Inc. 127 43 31. 7 124 15.8 06/17/81 179

623504 coho 79 ANAD Anadromous, Inc. 250 44 38.3 12414.1 08/15/81 230

624704 coho 79 ANAD Anadromous, Inc. 80 4610.0 12407.1 06/10/81 199

631634 coho 78 WDF Puyallup 140 46 35.1 12407.5 07109/81 468

631909 coho 78 WDF Wild Fish 194 44 38.3 12432.4 07117/81 564

631954 coho 78 WDF Washougal 41 46 10.0 124 12.7 05/21181 344

631954 coho 78 WDF Washougal 84 46 10.0 12427.1 06/11/81 417

631954 coho 78 WDF Washougal 227 46 09.9 124 12.5 08/12/81 486

631954 coho 78 WDF Washougal 181 45 55.4 124 08.2 07/14/81 505

631954 coho 78 WDF Washougal 41 46 10.0 124 12.7 05121/81 442

631954 coho 78 WDF Washougal 173 4620.0 124 18.5 07113/81 567

632037 coho 78 WDF Washougal 153 46 10.2 124 12.6 07/11181 495

632037 coho 78 WDF Washougal 181 45 55.4 12408.2 07/14/81 585

632038 coho 78 WDF Washougal 6 44 38.1 124 17.6 05/16/81 507

632038 coho 78 WDF Washougal 41 46 10.0 124 12.7 05/21/81 466

632038 coho 78 WDF Washougal 77 46 20.1 124 18.3 06110/81 390

632038 coho 78 WDF Washougal 227 46 09.9 124 12.5 08/12/81 427

632038 coho 78 WDF Washougal 225 46 09.5 124 19.3 08/12/81 443

632049 coho 78 WDF Fox Is. Pens 173 46 20.0 124 18.5 07113/81 502

632106 coho 79 WDF Grays R. 10 44 38.3 124 17.8 05/18/81 159

632106 coho 79 WDF Grays R. 30 45 55.1 124 12.5 05/20/81 135

632106 coho 79 WDF Grays R. 42 46 10.0 124 08.3 05/21181 132

632119 coho 78 COOP Seattle Aquarium 154 46 09.8 124 12.4 07111181 414

632150 coho 79 WDF Washougal 30 45 55.1 124 12.5 05/20/81 134

632151 coho 79 WDF Washougal 79 46 20.0 124 12.0 06/10/81 139

632151 coho 79 WDF Washougal 227 46 09.9 124 12.5 08/12/81 224

632203 coho 79 WDF Washougal 233 45 55.3 124 12.8 08/12/81 256

632203 coho 79 WDF Washougal 224 46 09.5 124 19.3 08/12/81 262

632243 coho 79 WDF Grays R. 183 45 55.0 12420.2 07114/81 240

050758 steelhead 80 FWS Quinault NFH 72 46 35.0 124 18.2 06/09/81 172

102252 steelhead 80 IDFG Dworshak NFH 35 46 10.0 124 28.0 05/21181 206

1982

031733 chinook 80 NMFS McNary (M) 129 45 20.4 124 12.0 06/22/82 355

050659 chinook 80 IDFG Dworshak NFH 57 45 00.9 12404.9 06/01182 183

051041 chinook 80 YAKI Nile Spring 62 44 40.7 12424.4 06/01182 173

066133 chinook 79 CDFG Trinity R. 36 45 59.8 124 16.9 05127/82 519

072054 chinook 80 ODFW McKenzie 91 46 22.9 12426.8 06/11182 280

072141 chinook 80 ODFW Bonneville 59 45 00.6 12407.7 06/01182 306

072143 chinook 80 ODFW Bonneville 89 46 22.7 124 15.6 06/11182 227

072143 chinook 80 ODFW Bonneville 129 45 20.4 124 12.0 06/22/82 284
Pearcy and Fisher: Distribution and Abundance of Juvenile Salmonids 75

Appendix (continued)

Release data Recovery data

Tag code Species Brood year Agency Hatchery Set Latitude Longitude Date Length (mm)

1982 (continued)

072350 chinook 80 ODFW Round Bulle 34 46 00.3 124 10.0 OS/27/82 192

072350 chinook 80 ODFW Round Bulle 51 45 20.1 12419.4 05/31/82 191

072350 chinook 80 ODFW Round Bulle 59 45 00.6 12407.7 06/01/82 302

072350 chinook 80 ODFW Round Bulle 81 46 40.9 12429.2 06/08/82 287

072419 chinook 80 ODFW Willamelle 79 46 40.7 124 17.8 06/08/82 247

072419 chinook 80 ODFW Willamelle 86 46 30.0 12425.0 06/10/82 287

072422 chinook 80 ODFW Willamelle 87 46 30.3 124 18.0 06/10/82 260

072502 chinook 80 ODFW Rock Creek 67 44 19.7 124 12.4 06/02/82 248

072507 chinook 80 ODFW Bonneville 56 45 00.4 124 15.0 05/31/82 289

072518 chinook 80 ODFW McKenzie 34 46 00.3 124 10.0 OS/27/82 207

072524 chinook 80 ODFW Marion Forks 82 46 40.2 124 19.4 06/10/82 150

072525 chinook 80 ODFW Marion Forks 86 4630.0 12425.0 06/10/82 210

072526 chinook 80 ODFW Marion Forks 82 46 40.2 12419.4 06/10/82 193

072527 chinook 80 ODFW Marion Forks 62 44 40.7 12424.4 06/01/82 179

072527 chinook 80 ODFW Marion Forks 81 46 40.9 12429.2 06/08/82 165

072528 chinook 80 ODFW Marion Forks 35 46 00.0 124 10.0 OS/27/82 213

072529 chinook 80 ODFW Marion Forks 36 45 59.8 124 16.9 OS/27/82 186

072529 chinook 80 ODFW Marion Forks 87 46 30.3 124 18.0 06/10/82 228

072536 chinook 80 ODFW Elk R. 56 45 00.4 124 15.0 05/31/82 316

102412 chinook 80 IDFG McCall 86 46 30.0 12425.0 06/10/82 168

102413 chinook 80 IDFG McCall 34 46 00.3 12410.0 OS/27/82 139

102413 chinook 80 IDFG McCall 81 46 40.9 12429.2 06/08/82 140

624832 chinook 80 DOMS Domsea 22 46 40.4 124 18.2 OS/23/82 270

624832 chinook 80 DOMS Domsea 82 46 40.2 124 19.4 06/10/82 309

632307 chinook 80 WDF Soleduck 20 46 59.9 12431.9 OS/22/82 203

632310 chinook 80 WDF Cowlitz 173 44 18.6 124 10.4 09/14/82 340

632311 chinook 80 WDF Cowlitz 33 46 00.4 12403.6 OS/27/82 159

050757 coho 79 TULA Tulalip 45 45 40.6 124 10.4 05/30/82 399

050845 coho 80 QDNR Wild 62 44 40.7 12424.4 06/01/82 143

051019 coho 80 QDNR Wild 72 47 20.3 12439.3 06/07/82 127

051035 coho 80 FWS Eagle Cr. NFH 131 47 19.8 12431.7 09/04/82 373

051035 coho 80 FWS Eagle Cr. NFH 59 45 00.6 12407.7 06/01/82 156

051036 coho 80 FWS Eagle Cr. NFH 86 46 30.0 124 25.0 06/10/82 147

051037 coho 80 FWS Eagle Cr. NFH 58 45 00.3 12405.2 06/01/82 146

051038 coho 80 FWS Eagle Cr. NFH 101 45 50.3 12414.7 06/13/82 204

051038 coho 80 FWS Eagle Cr. NFH 130 45 20.6 124 19.7 06/22/82 156

051039 coho 80 FWS Eagle Cr. NFH 127 45 20.1 12426.3 06/21/82 156

051039 coho 80 FWS Eagle Cr. NFH 143 46 40.4 12422.1 09/06/82 317

051040 coho 80 FWS Eagle Cr. NFH 58 45 00.3 12405.2 06/01/82 147

071310 coho 80 ODFW Big Creek 130 45 20.6 124 19.7 06/22/82 193

071511 coho 80 ODFW Big Creek 59 45 00.6 124 07.7 06/01/82 153

072263 coho 79 ODFW Sandy 41 46 07.6 12429.0 OS/28/82 480

072403 coho 80 ODFW Rock Creek 61 44 40.9 124 17.7 06/01/82 193

072403 coho 80 ODFW Rock Creek 124 45 00.0 12422.1 06/20/82 198

072404 coho 80 ODFW Rock Creek 123 45 00.0 12422.1 06/20/82 205

072406 coho 80 ODFW FalICr. 108 45 20.4 124 12.9 06/16/82 210

072427 coho 80 ODFW Cascade 131 47 19.8 12431.7 09/04/82 279

072432 coho 80 ODFW Cascade 125 45 20.6 12426.2 06/21/82 160

072434 coho 80 ODFW Cascade 131 47 19.8 12431.7 09/04/82 320

072455 coho 80 ODFW Salmon R. 107 45 20.4 124 12.3 06/16/82 162

072456 coho 80 ODFW Salmon R. 59 45 00.6 12407.7 06/01/82 147

072456 coho 80 ODFW Salmon R. 130 45 20.6 124 19.7 06/22/82 212

072458 coho 80 ODFW Siletz 107 45 20.4 124 12.3 06/16/82 204

072458 coho 80 ODFW Siletz 150 4620.1 12418.2 09/07/82 352

072458 coho 80 ODFW Siletz 160 45 40.0 124 00.8 09/09/82 336

072508 coho 80 ODFW BUlle Falls 112 44 40.2 12431.5 06/18/82 165

072534 coho 80 ODFW FallCr. 107 45 20.4 124 12.3 06/16/82 274

072534 coho 80 ODFW Fall Cr. 108 45 20.4 124 12.9 06/16/82 200
76 NOAA Technical Report NMFS 93

Appendix (continued)

Release data Recovery data

Tag code Species Brood year Agency Hatchery Set Latitude Longitude Date Length (mm)

1982 (continued)

072549 coho 80 ODFW Sandy 150 4620.1 124 18.2 09/07/82 268

072550 coho 80 ODFW Sandy 150 4620.1 124 18.2 09/07/82 353

072556 coho 80 ODFW Sandy 59 45 00.6 12407.7 06/01/82 153

072556 coho 80 ODFW Sandy 61 44 40.9 124 17.7 06/01/82 163

072557 coho 80 ODFW Sandy 59 4500.6 124 07.7 06/01/82 152

072557 coho 80 ODFW Sandy 59 45 00.6 12407.7 06/01/82 150

072557 coho 80 ODFW Sandy 108 45 20.4- 124 12.9 06/16/82 163

072558 coho 80 ODFW Sandy 123 45 00.0 124 22.1 06/20/82 174-

072648 coho 80 ODFW Big Creek 130 45 20.6 124 19.7 06/22/82 173

072649 coho 80 ODFW Big Creek 58 45 00.3 12405.2 06/01/82 142

090211 coho 80 ODFW Big Creek 62 44 40.7 12424.4 06/01/82 188

600516 coho 81 OAF Oregon Aqua-Foods 155 45 56.3 12406.7 09/08/82 246

600533 coho 81 OAF Oregon Aqua-Foods 150 4620.1 124 18.2 09/07/82 242

600540 coho 81 OAF Oregon Aqua-Foods 154 45 56.3 124 02.9 09/08/82 184

600540 coho 81 OAF Oregon Aqua-Foods 172 4419.1 124 10.7 09/14/82 204

600541 coho 81 OAF Oregon Aqua-Foods 163 45 20.7 12405.3 09/12/82 186

600542 coho 81 OAF Oregon Aqua-Foods 116 44 40.2 124 10.7 09/11/82 157

600555 coho 81 OAF Oregon Aqua-Foods 154 45 56.3 124 02.9 09/08/82 245

600560 coho 81 OAF Oregon Aqua-Foods 151 4620.1 124 17.7 09/08/82 182

603423 coho 80 OAF Oregon Aqua-Foods 171 44 19.9 124 12.6 09/14/82 552

604148 coho 80 OAF Oregon Aqua-Foods 171 44 19.9 124 12.6 09/14/82 408

632130 coho 79 SQAX Squaxin Is. Pens 22 46 40.4 124 18.2 OS/23/82 444

632130 coho 79 SQAX Squaxin Is. Pens 41 46 07.6 124 29.0 OS/28/82 433

632139 coho 79 WDF Green R. 19 47 00.0 12424.9 OS/22/82 460

632203 coho 79 WDF Washougal 47 45 40.3 12424.6 05/30/82 518

632249 coho 80 WDF Wild 81 4640.9 124 29.2 06/08/82 168

632303 coho 80 WDF Lower Kalama 59 4500.6 12407.7 06/01/82 164

632303 coho 80 WDF Lower Kalama 59 45 00.6 124 07.7 06/01/82 160

632303 coho 80 WDF Lower Kalama 59 4500.6 124 07.7 06/01/82 169

632303 coho 80 WDF Lower Kalama 59 45 00.6 12407.7 06/01/82 161

632303 coho 80 WDF Lower Kalama 108 45 20.4- 124 12.9 06/16/82 205

632304 coho 80 WDF Speelyai 59 45 00.6 124 07.7 06/01/82 148

632305 coho 80 WDF Speelyai 131 47 19.8 12431.7 09/04/82 330

632313 coho 79 WDF Wild 104 45 40.6 124 10.3 06/14/82 455

632357 coho 80 WDF Wild 77 47 00.3 12424.8 06/07/82 150

632358 coho 80 WDF Wild 87 46 30.3 124 18.0 06/10/82 128

632363 coho 80 WDF Grays R. 57 45 00.9 124 04.9 06/01/82 161

632401 coho 80 WDF Naselle R. 82 46 40.2 12419.4- 06/10/82 224

632402 coho 80 WDF Nemah 78 47 00.3 124 24.8 06/07/82 165

632402 coho 80 WDF Nemah 79 46 40.7 124 17.8 06/08/82 133

632402 coho 80 WDF Nemah 107 45 20.4- 124 12.3 06/16/82 145

632404 coho 80 WDF Humptulips 82 46 40.2 12419.4- 06/10/82 150

632404 coho 80 WDF Humptulips 88 46 29.8 124 17.5 06/10/82 149

632408 coho 80 WDF Simpson 56 45 00.4 124 15.0 06/01/82 133

632408 coho 80 WDF Simpson 88 46 29.8 124 17.5 06/10/82 133

632409 coho 80 WDF Willapa 78 47 00.3 124 24.8 06/07/82 160

632415 coho 80 WDF Wild 86 46 30.0 124 25.0 06/10/82 167

632423 coho 80 WDF Cowlitz 56 45 00.4- 124 15.0 05/31/82 141

632427 coho 80 WDF Cowlitz 59 4500.6 12407.7 06/01/82 164

632436 coho 80 WDF Cowlitz 58 45 00.3 12405.2 06/01/82 136

632436 coho 80 WDF Cowlitz 59 45 00.6 12407.7 06/01/82 158

632437 coho 80 WDF Cowlitz 107 45 20.4 124 12.3 06/16/82 164

632438 coho 80 WDF Cowlitz 130 45 20.6 124 19.7 06/22/82 141

632439 coho 80 WDF Cowlitz 59 45 00.6 12407.7 06/01/82 149

632446 coho 80 WDF Cowlitz 39 46 09.3 124 19.1 OS/28/82 138

632448 coho 80 WDF Cowlitz 131 47 19.8 124 31.7 09/04/82 316

632449 coho 80 WDF Cowlitz 131 47 19.8 12431.7 09/04/82 332

632516 coho 80 WDF Washougal 102 45 39.6 12401.6 06/13/82 136 ---_._--
Pearcy and Fisher: Distribution and Abundance ofJuvenile Salmonids 77

Appendix (continued)

Release data Recovery data

Tag code Species Brood year Agency Hatchery Set Latitude Longitude Date Length (mm)

1982 (continued)

632518 coho 80 WDF Washougal 90 46 23.1 124 18.2 06/11/82 137

632519 coho 80 WDF Washougal 123 45 00.0 12422.1 06120/82 155

632526 coho 80 WDF Washougal 125 45 20.6 12426.2 06/21/82 165

632529 coho 80 WDF Washougal 104 45 40.6 124 10.3 06/14/82 146

632530 coho 80 WDF Washougal 150 4620.1 124 18.2 09/07/82 270

632548 coho 80 WDF Wild 81 46 40.9 12429.2 06/08/82 144

051043 steelhead 81 HOH Quinault lake 52 45 20.9 12425.8 05/31/82 185

1983

051122 chinook 81 FWS Quinault NFH 75 48 00.2 12448.1 06/15/83 238

051339 chinook 81 YAKI Leavenworth NFH 30 46 19.8 124 25.9 OS/21/83 152

072547 chinook 81 ODFW Bonneville 8 48 00.0 12455.8 05/17/83 254

072836 chinook 82 ODFW Round Butte 63 4640.8 12411.5 06/12/83 124

102318 chinook 81 IDFG Rapid River 26 4640.2 124 32.7 OS/20/83 158

102458 chinook 81 IDFG McCall 39 45 40.9 124 10.6 OS/23/83 146

632505 chinook 81 WDF Cowlitz 28 46 20.7 12411.4 OS/21/83 225

632609 chinook 81 WDF Cowlitz 28 46 20.7 12411.4 05121/83 224

632609 chinook 81 WDF Cowlitz 28 46 20.7 12411.4 OS/21/83 254

050929 coho 81 FWS Willard NFH 90 4600.1 124 05.6 06/23/83 134

050938 coho 81 FWS Willard NFH 95 45 40.0 123 59.6 06/23/83 145

051062 coho 80 TULA Tulalip Cr. 5 48 20.4 125 09.5 05/16/83 370

051136 coho 81 FWS Eagle Creek NFH 66 4640.0 124 26.3 06/13/83 195

051137 coho 81 FWS Eagle Creek NFH 39 45 40.9 12410.6 OS/23/83 153

072445 coho 81 ODFW Fall Creek 32 46 19.8 12425.0 OS/21/83 170

072449 coho 81 ODFW Klaskanine 39 45 40.9 124 10.6 OS/23/83 173

072450 coho 81 ODFW Siletz 68 47 00.0 124 32.3 06/13/83 222

072456 coho 80 ODFW Salmon River 14 47 40.4 12434.5 05/18/83 544

072544 coho 80 ODFW Cole Rivers 34 46 00.3 12406.0 OS/22/83 444

072559 coho 81 ODFW Nehalem 87 4600.4 124 01.4 06123/83 325

072561 coho 81 ODFW Nehalem 28 46 20.7 12411.4 OS/21/83 200

072561 coho 81 ODFW Nehalem 80 47 40.0 12437.5 06/15/83 233

072639 coho 81 ODFW Rock Creek 107 43 27.5 124 19.0 06/23/83 315

072642 coho 81 ODFW Fall Creek 59 44 19.8 124 33.4 05127/83 173

072642 coho 81 ODFW Fall Creek 66 4640.0 12426.3 06/13/83 190

072735 coho 81 ODFW Sandy 34 4600.3 12406.0 OS/23/83 146

600533 coho 81 OAF Oregon Aqua-Foods 69 47 00.0 12424.0 06/13/83 400

600548 coho 82 OAF Oregon Aqua-Foods 122 48 20.0 12450.8 09/15/83 272

600617 coho 82 OAF Oregon Aqua-Foods 149 45 40.0 12403.1 09120/83 232

603556 coho 82 OAF Oregon Aqua-Foods 155 45 20.2 12401.3 09122/83 198

603557 coho 82 OAF Oregon Aqua-Foods 149 45 40.0 12403.1 09/20/83 206

603559 coho 82 OAF Oregon Aqua-Foods 163 44 40.0 12406.7 09/23/83 152

621521 coho 81 ANAD Anadromous, Inc. 109 43 27.5 12430.1 06/26/83 157

621521 coho 81 ANAD Anadromous, Inc. 109 43 27.5 12430.1 06/26/83 144

621521 coho 81 ANAD Anadromous, Inc. 110 43 27.5 12430.1 06/26/83 153

621522 coho 81 ANAD Anadromous, Inc. 109 43 27.5 12430.1 06/26/83 158

621522 coho 81 ANAD Anadromous, Inc. 110 43 27.5 12430.1 06/26/83 151

621526 coho 81 ANAD Anadromous, Inc. 111 43 27.6 12436.4 06/26/83 167

621532 coho 81 ANAD Anadromous, Inc. 110 43 27.5 12430.1 06126/83 147

621532 coho 81 ANAD Anadromous, Inc. 110 43 27.5 12430.1 06/26/83 152

621533 coho 81 ANAD Anadromous, Inc. 110 43 27.5 12430.1 06/26/83 151

621533 coho 81 ANAD Anadromous, Inc. 110 43 27.5 12430.1 06/26/83 174

621534 coho 81 ANAD Anadromous, Inc. 109 43 27.5 12430.1 06/26/83 148

621534 coho 81 ANAD Anadromous, Inc. 109 43 27.5 12430.1 06/26/83 167

621534 coho 81 ANAD Anadromous, Inc. 109 43 27.5 12430.1 06/26/83 161

621534 coho 81 ANAD Anadromous, Inc. 110 43 27.5 12430.1 06/26/83 155

621535 coho 81 ANAD Anadromous, Inc. 110 43 27.5 12430.1 06126/83 153

621535 coho 81 ANAD Anadromous, Inc. 111 43 27.6 124 36.4 06/26/83 159

621535 coho 81 ANAD Anadromous, Inc. 110 43 27.5 12430.1 06126/83 160
78 NOAA Technical Report NMFS 93

Appendix (continued)

Release data Recovery data

Tag code Species Brood year Agency Hatchery Set Latitude Longitude Date Length (mm)

1983 (continued)

632334 coho 80 WDF Wild 13 47 40.5 12437.6 05/17/83 435

632334 coho 80 WDF Wild 5 48 20.4 125 09.5 05/16/83 392

632445 coho 80 WDF Cowlitz 8 48 00.0 12455.8 05/17/83 394

632529 coho 80 WDF Washougal 61 46 29.7 12421.5 06/09/83 468

632605 coho 81 WDF Lower Kalama 61 46 29.7 12421.5 09/06/83 203

632605 coho 81 WDF Lower Kalama 66 4640.0 124 26.3 06/13/86 210

632632 coho 81 WDF Cowlitz 37 45 40.5 123 59.1 OS/23/83 134

632645 coho 81 WDF Washougal 61 46 29.7 12421.5 09/06/83 198

1984

050859 chinook 82 FWS Carson NFH 13 47 40.1 125 01.3 06/06/84 179

050860 chinook 82 FWS Carson NFH 17 47 20.1 124 39.0 06/08/84 168

050916 chinook 82 FWS Carson NFH 26 46 20.0 124 13.0 06/10/84 180

050918 chinook 82 FWS Carson NFH to 47 39.7 12439.0 06/06/84 165

051140 chinook 82 FWS Little White Salmon 14 47 20.1 12447.0 06/06/84 170

051528 chinook 83 FWS Leavenworth NFH 111 46 59.6 124 19.3 07/28/84 138

072840 chinook 82 ODFW Round Butte 13 4740.1 12501.3 06/06/84 205

072858 chinook 82 ODFW Big Creek 147 47 59.7 124 55.6 09/01/84 389

072863 chinook 82 ODFW Marion Forks 17 47 20.1 12439.0 06/08/84 164

102413 chinook 80 IDGF McCall 33 45 59.5 124 17.0 06/12/84 856

102607 chinook 83 IDGF Hagerman NFH 26 46 20.0 124 13.0 06/10/84 149

102738 chinook 82 IDGF McCall 148 47 59.7 124 49.2 09/01/84 236

102738 chinook 82 IDGF McCall 19 47 00.0 12432.0 06/08/84 164

102738 chinook 82 IDGF McCall 26 46 20.0 124 13.0 06/10/84 148

102738 chinook 82 IDGF McCall 140 48 20.3 124 48.5 09/01/84 267

621761 chinook 83 ANAD Anadromous 205 44 00.1 124 11.1 09/15/84 211

621761 chinook 83 ANAD Anadromous 196 44 40.0 12407.2 09/14/84 213

621761 chinook 83 ANAD Anadromous 196 44 40.0 12407.2 09/14/84 217

632156 chinook 80 WDF Cowlitz 126 48 58.0 12541.8 08/01/84 601

632834 chinook 82 WDF Cowlitz 36 4540.1 12403.2 06/12/84 214

632844 chinook 82 WDF Rocky Reach 36 4540.1 12403.2 06/12/84 186

632844 chinook 82 WDF Rocky Reach 23 46 39.6 124 19.5 06/09/84 150

632844 chinook 82 WDF Rocky Reach 115 4659.1 12439.2 07/29/84 223

022463 coho 82 CDFO San Juan River COP 7 48 00.4 12455.1 06/05/84 155

051119 coho 81 FWS Quilcene NFH 126 48 58.0 125 41.8 08/01/84 541

072615 coho 82 ODFW Cole Rivers 72 4045.1 124 19.6 07/10/84 200

072637 coho 82 ODFW Wahkeena Pond 119 47 29.9 12441.2 07/29/84 269

072638 coho 81 ODFW Rock Creek 60 44 20.6 124 09.5 06/19/84 582

072746 coho 81 ODFW Cascade 39 45 19.8 124 05.5 06/13/84 505

072854 coho 82 ODFW Cole Ri\ers 71 40 31. 7 124 28.8 07/09/84 191

072945 coho 82 ODFW Cascade 142 48 20.8 124 59.9 09/01/84 293

072949 coho 82 ODFW Cascade 35 4540.1 12410.4 06/12/84 162

073014 coho 82 ODFW Bonneville 160 47 00.0 12432.1 09/03/84 259

231703 coho 82 NMFS Priest Rapids (M) 18 47 00.0 124 39.6 06/08/84 176

603609 coho 82 OAF Oregon Aqua-Foods 94 44 59.6 12408.2 07/25/84 498

603633 coho 83 OAF Oregon Aqua-Foods 41 45 20.3 124 19.5 06/14/84 143

603644 coho 83 OAF Oregon Aqua-Foods 167 46 39.9 12425.7 09/04/84 197

621742 coho 82 A AD Anadromous, Inc. 165 4640.0 124 18.7 09/04/84 260

632554 coho 81 WDF Green River 125 48 33.4 12455.1 07/30/84 462

632561 coho 81 COOP George Adams 122 48 00.0 12455.9 07/30/84 534

632562 coho 81 COOP Port Gamble Pens 125 48 33.4 12455.1 07/30/84 539

632730 coho 81 WDF Skykomish 8 4800.0 12449.0 06/05/84 485

632739 coho 82 WDF Soleduck 18 47 00.0 124 39.6 06/08/84 160

632742 coho 82 WDF Naselle 18 47 00.0 124 39.6 06/08/84 168

632742 coho 82 WDF Naselle 20 47 00.0 124 24.5 06/08/84 158

632746 coho 82 WDF Simpson 16 47 20.0 124 32.0 06/08/84 135

632921 coho 82 WDF Cowlitz 97 45 30.1 12401.8 07/26/84 245

632924 coho 82 WDF Cowlitz 41 45 20.3 124 19.5 06/14/84 168

-----"_._._------
Pearcy and Fisher: Distribution and Abundance of Juvenile Salmonids 79

Appendix (continued)

Release data Recovery data

Tag code Species Brood year Agency Hatchery Set Latitude Longitude Date Length (mm)

1984 (continued)

632945 coho 82 WDF Washougal 161 47 00.4 12439.1 09/03/84 303

632946 coho 82 WDF Washougal 163 47 00.3 12431.9 09/03/84 269

632957 coho 82 WDF Washougal 47 44 59.4- 12422.4 06/16/84 145

632960 coho 82 WDF Washougal 170 46 20.4- 124 17.9 09/05/84 289

632961 coho 82 WDF Washougal 163 47 00.3 12431.9 09/03/84 280

633016 coho 82 WDF Speelyai 46 45 00.0 124 14.9 06/16/84 157

633027 coho 82 WDF Wild 146 47 59.7 12503.2 09/01/84 266

051335 steelhead 83 FWS Dworshak 27 46 20.0 12433.8 06/10/84 194

1985

051155 chinook 83 FWS Carson NFH 6 45 58.9 12425.1 05/30/85 169

051158 chinook 83 FWS Carson NFH 1 46 20.1 124 11.1 OS/29/85 142

051158 chinook 83 FWS Carson NFH 30 46 19.9 12432.5 06/05/85 159

051/59 chinook 83 FWS Carson NFH I 4620.1 12411.1 OS/29/85 155

051/60 chinook 83 FWS Carson NFH 1 4620.1 12411.1 OS/29/85 142

051216 chinook 83 FWS Carson NFH 1 46 20.1 12411.1 OS/29/85 159

051525 chinook 83 FWS Spring Creek NFH 77 4600.1 124 17.3 06/17/85 220

051527 chinook 83 FWS Little White Salmon I 4620.1 12411.1 OS/29/85 177

051533 chinook 83 FWS Leavenworth NFH 6 45 58.9 12425.1 05/30/85 172

072749 chinook 83 ODFW Rock Creek 49 44 19.9 12407.0 06/11/85 276

072749 chinook 83 ODFW Rock Creek 117 47 59.7 124 48.3 06/25/85 295

072902 chinook 83 ODFW Marion Forks 1 4620.1 124 11.1 OS/29/85 168

073007 chinook 83 ODFW Bonneville 1 4620.1 124 11.1 OS/29/85 187

073007 chinook 83 ODFW Bonneville I 4620.1 12411.1 OS/29/85 219

073007 chinook 83 ODFW Bonneville I 4620.1 124 11.1 OS/29/85 230

073023 chinook 83 ODFW Marion Forks II 46 00.3 12359.7 05/31/85 261

073127 chinook 83 ODFW Bonneville 1 4620.1 124 11.1 OS/29/85 158

073127 chinook 83 ODFW Bonneville 8 45 59.3 124 17.2 05/30/85 237

073128 chinook 83 ODFW Round Butte 115 48 00.3 125 03.0 06/25/85 275

073155 chinook 83 ODFW Lookingglass I 4620.1 124 11.1 OS/29/85 158

073155 chinook 83 ODFW Lookingglass I 46 20.1 124 11.1 OS/29/85 155

102518 chinook 83 IDFG McCall I 4620.1 124 11.1 OS/29/85 138

102518 chinook 83 IDFG McCall I 46 20.1 12411.1 OS/29/85 142

102518 chinook 83 IDFG McCall 1 4620.1 12411.1 OS/29/85 155

102523 chinook 83 VI Eagle Creek NFH 1 46 20.1 12411.1 OS/29/85 147

102523 chinook 83 VI Eagle Creek NFH 30 46 19.9 12432.5 06/05/85 162

102524 chinook 83 VI Eagle Creek NFH 1 4620.1 124 11.1 OS/29/85 145

102524 chinook 83 VI Eagle Creek NFH 1 4620.1 12411.1 OS/29/85 146

102524 chinook 83 VI Eagle Creek NFH 1 4620.1 12411.1 OS/29/85 166

102526 chinook 83 VI Eagle Creek NFH 1 4620.1 124 11.1 OS/29/85 141

102526 chinook 83 VI Eagle Creek NFH 1 46 20.1 124 11.1 OS/29/85 170

102526 chinook 83 VI Eagle Creek NFH 26 46 20.0 12411.4 06/03/85 118

102532 chinook 83 VI Eagle Creek NFH 15 46 05.8 124 00.8 05/31/85 149

102532 chinook 83 VI Eagle Creek NFH 1 4620.1 124 11.1 OS/29/85 178

102532 chinook 83 VI Eagle Creek NFH 1 46 20.1 124 11.1 OS/29/85 170

102533 chinook 83 VI Eagle Creek NFH 1 46 20.1 124 11.1 OS/29/85 166

102533 chinook 83 VI Eagle Creek NFH 1 4620.1 124 11.1 OS/29/85 164

102533 chinook 83 VI Eagle Creek NFH 11 46 00.3 12359.7 05/31/85 155

102533 chinook 83 VI Eagle Creek NFH 3 46 10.0 12404.6 05/30/85 210

102533 chinook 83 VI Eagle Creek NFH I 4620.1 124 11.1 OS/29/85 129

102533 chinook 83 VI Eagle Creek NFH 1 46 20.1 124 11.1 OS/29/85 200

102533 chinook 83 VI Eagle Creek NFH 1 46 20.1 124 11.1 OS/29/85 225

102533 chinook 83 VI Eagle Creek NFH 1 46 20.1 124 11.1 OS/29/85 149

102633 chinook 83 IDFG McCall I 4620.1 124 11.1 OS/29/85 140

102633 chinook 83 IDFG McCall I 4620.1 124 11.1 OS/29/85 135

231713 chinook 83 NMFS Priest Rapids (M) 110 47 40.1 12438.7 06/25/85 180

231713 chinook 83 NMFS Priest Rapids (M) 6 45 58.9 12425.1 05/30/85 160

231714 chinook 83 NMFS Priest Rapids (M) I 4620.1 124 11.1 OS/29/85 126
80 NOAA Technical Report NMFS 93

Appendix (continued)

Release data Recovery data

Tag code Species Brood year Agency Hatchery Set Latitude Longitude Date Length (mm)

1985 (continued)

231748 chinook 83 NMFS Priest Rapids (M) 110 4740.1 12438.7 06/25/85 180

231748 chinook 83 NMFS Priest Rapids (M) 1 4620.1 124 11.1 05/29/85 119

231753 chinook 83 NMFS Priest Rapids (M) 27 46 19.6 12418.4 06/03/85 149

231756 chinook 83 NMFS Priest Rapids (M) 93 47 00.3 124 32.0 06/22/85 190

632152 chinook 83 WDF Lyons Ferry 117 47 59.7 12448.3 06/25/85 233

632152 chinook 83 WDF Lyons Ferry 92 47 00.2 124 25.2 06122/85 236

632152 chinook 83 WDF Lyons Ferry 83 46 19.9 124 18.4 06/18/85 247

632152 chinook 83 WDF Lyons Ferry 74 4600.0 12400.2 06/17/85 242

632152 chinook 83 WDF Lyons Ferry 94 47 00.0 12439.7 06/22/85 220

632152 chinook 83 WDF Lyons Ferry 94 47 00.0 124 39.7 06/22/85 209

632152 chinook 83 WDF Lyons Ferry 77 4600.1 124 17.3 06/17/85 212

632152 chinook 83 WDF Lyons Ferry 6 45 58.9 12425.1 05/30/85 184

632152 chinook 83 WDF Lyons Ferry 14 46 00.2 124 03.3 05/31185 197

632152 chinook 83 WDF Lyons Ferry 15 46 05.8 124 00.8 05/31185 176

632152 chinook 83 WDF Lyons Ferry 67 45 40.3 123 58.6 06/14/85 220

632152 chinook 83 WDF Lyons Ferry 1 46 20.1 124 11.1 05/29/85 188

632152 chinook 83 WDF Lyons Ferry 117 47 59.7 124 48.3 06/25/85 215

632152 chinook 83 WDF Lyons Ferry 1 46 20.1 124 11.1 05129/85 187

632152 chinook 83 WDF Lyons Ferry 1 4620.1 124 11.1 05/29/85 199

632152 chinook 83 WDF Lyons Ferry 1 4620.1 124 11.1 05129/85 194

632152 chinook 83 WDF Lyons Ferry 1 46 20.1 124 11.1 05/29/85 170

632152 chinook 83 WDF Lyons Ferry 1 4620.1 12411.1 05/29/85 215

632326 chinook 83 WDF Wells Channel 1 4620.1 124 11.1 05/29/85 189

632747 chinook 83 WDF Cowlitz 88 46 20.0 12411.0 06120/85 237

632747 chinook 83 WDF Cowlitz 15 46 05.8 12400.8 05/31185 220

632747 chinook 83 WDF Cowlitz 15 46 05.8 12400.8 05/31/85 230

632747 chinook 83 WDF Cowlitz 11 46 00.3 12359.7 05/31185 210

632747 chinook 83 WDF Cowlitz 1 4620.1 12411.1 05/29/85 206

632747 chinook 83 WDF Cowlitz 1 4620.1 124 11.1 05129/85 207

632747 chinook 83 WDF Cowlitz 1 4620.1 124 11.1 05/29/85 182

632748 chinook 83 WDF Cowlitz 89 46 20.4 124 19.0 06120/85 232

632748 chinook 83 WDF Cowlitz 55 44 39.8 124 18.2 06/12/85 198

632748 chinook 83 WDF Cowlitz 11 46 00.3 12359.7 05/31/85 229

632748 chinook 83 WDF Cowlitz 9 46 21.0 124 10.0 05/31185 205

632748 chinook 83 WDF Cowlitz 12 45 59.9 12403.2 05/31/85 213

632748 chinook 83 WDF Cowlitz 1 46 20.1 124 11.1 05/29/85 175

632748 chinook 83 WDF Cowlitz 19 46 00.3 123 59.5 06/01185 179

632836 chinook 82 WDF Cowlitz 1 46 20.1 124 11.1 05129/85 462

632857 chinook 83 WDF Rocky Reach 9 46 21.0 124 10.0 05/31185 170

632857 chinook 83 WDF Rocky Reach 89 46 20.4 124 19.0 06120/85 196

632857 chinook 83 WDF Rocky Reach 88 46 20.0 12411.0 06120/85 190

632857 chinook 83 WDF Rocky Reach 105 47 20.1 12446.7 06124/85 228

632857 chinook 83 WDF Rocky Reach 1 4620.1 124 11.1 05/29/85 186

632857 chinook 83 WDF Rocky Reach 1 4620.1 124 11.1 05/29/85 182

632857 chinook 83 WDF Rocky Reach 1 4620.1 124 11.1 05129/85 175

632857 chinook 83 WDF Rocky Reach I 4620.1 124 11.1 05/29/85 184

633054 chinook 83 WDF Cowlitz 1 4620.1 124 11.1 05129/85 190

633055 chinook 83 WDF Cowlitz 89 46 20.4 124 19.0 06120/85 237

633055 chinook 83 WDF Cowlitz 14 46 00.2 124 03.3 05/31185 215

633055 chinook 83 WDF Cowlitz 1 4620.1 124 11.1 05/29/85 202

633056 chinook 83 WDF Cowlitz 3 46 10.0 12404.6 05/30/85 195

633056 chinook 83 WDF Cowlitz 1 4620.1 124 11.1 05/29/85 215

633117 chinook 83 WDF Washougal 1 4620.1 124 11.1 05/29/85 147

633122 chinook 83 WDF Cowlitz 1 4620.1 124 11.1 05/29/85 194

633122 chinook 83 WDF Cowlitz 1 4620.1 124 11.1 05/29/85 204

633122 chinook 83 WDF Cowlitz 1 46 20.1 124 11.1 05/29/85 223

633218 chinook 83 WDF Lyons Ferry 110 47 40.1 124 38.7 06/25/85 220

633218 chinook 83 WDF Lyons Ferry 93 47 00.3 12432.0 06/22/85 216

-----------
Pearcy and Fisher: Distribution and Abundance ofJuvenile Salmonids 81

Appendix (continued)

Release data Recovery data

Tag code Species Brood year Agency Hatchery Set Latitude Longitude Date Length (mm)

1985 (continued)

633218 chinook 83 WDF Lyons Ferry 117 47 59.7 124 48.3 06/25/85 221

633218 chinook 83 WDF Lyons Ferry 83 46 19.9 124 18.4 06/18/85 220

633218 chinook 83 WDF Lyons Ferry 94 47 00.0 12439.7 06/22/85 241

633218 chinook 83 WDF Lyons Ferry 1 4620.1 124 11.1 OS/29/85 177

633218 chinook 83 WDF Lyons Ferry 1 4620.1 124 11.1 OS/29/85 175

633218 chinook 83 WDF Lyons Ferry 8 45 59.3 124 17.2 05/30/85 183

h50606 chinook 83 FWS Spring Creek NFH 82 46 19.4 124 10.8 06/18/85 354

022458 coho 82 CDFO Thornton Cr. CDP 92 47 00.2 12425.2 06/22/85 530

022651 coho 82 CDFO Tenderfoot Cr. 89 46 20.4 124 19.0 06/20/85 445

022723 coho 82 CDFO Puntledge R. 105 47 20.1 12446.7 06/24/85 495

072654 coho 83 ODFW Bonneville 68 45 40.4 124 03.3 06/14/85 164

072756 coho 83 ODFW Butte Falls 30 46 19.9 12432.5 06/05/85 200

072756 coho 83 ODFW Butte Falls 12 45 59.9 124 03.2 05/31/85 207

072761 coho 83 ODFW Rock Creek 111 47 40.3 12446.1 06/25/85 264

072762 coho 83 ODFW Rock Creek 52 44 39.7 124 17.5 06/12/85 185

072763 coho 83 ODFW Salmon River 111 47 40.3 12446.1 06/25/85 263

072763 coho 83 ODFW Salmon River 95 47 00.2 124 46.6 06/22/85 233

072763 coho 83 ODFW Salmon River 12 45 59.9 12403.2 05/31/85 214

072801 coho 83 ODFW Klaskanine 94 47 00.0 12439.7 06/22/85 204

072801 coho 83 ODFW Klaskanine 11 4600.3 12359.7 05/31/85 186

072801 coho 83 ODFW Klaskanine 12 45 59.9 12403.2 05/31/85 184

072811 coho 83 ODFW Sandy 14 46 00.2 124 03.3 05/31/85 174

072958 coho 83 ODFW Fall Creek 113 47 40.1 12453.4 06/25/85 233

072959 coho 83 ODFW Fall Creek 113 47 40.1 12453.4 06/25/85 243

072962 coho 83 ODFW Fall Creek 106 47 20.1 124 39.3 06/24/85 264

072962 coho 83 ODFW Fall Creek 80 46 00.1 12438.7 06/17/85 300

072963 coho 83 ODFW Fall Creek 15 46 05.8 12400.8 05/31/85 165

072963 coho 83 ODFW Fall Creek 8 45 59.3 124 17.2 05/30/85 189

072963 coho 83 ODFW Fall Creek 12 45 59.9 124 03.2 05/31/85 179

073026 coho 83 ODFW Siletz 11 46 00.3 123 59.7 05/31/85 171

073026 coho 83 ODFW Siletz 30 46 19.9 124 32.5 06/05/85 180

073029 coho 83 ODFW Cascade 79 46 00.5 12432.2 06/17/85 168

073032 coho 83 ODFW Big Creek 80 4600.1 12438.7 06/17/85 180

073032 coho 83 ODFW Big Creek 90 4620.1 124 25.8 06/20/85 181

073032 coho 83 ODFW Big Creek 70 45 40.2 124 11.1 06/16/85 1M

073045 coho 83 ODFW Sandy 30 46 19.9 124 32.5 06/05/85 150

073046 coho 83 ODFW Sandy 79 46 00.5 12432.2 06/17/85 186

073046 coho 83 ODFW Sandy 85 46 20.7 12432.0 06/18/85 195

073046 coho 83 ODFW Sandy 25 4600.1 12407.0 06/02/85 180

073047 coho 83 ODFW Sandy 31 46 19.9 12439.7 06/05/85 168

073049 coho 83 ODFW Sandy 15 46 05.8 124 00.8 05/31/85 152

073049 coho 83 ODFW Sandy 11 46 00.3 12359.7 05/31/85 148

073050 coho 83 ODFW Sandy 81 46 00.4 12446.2 06/17/85 210

073105 coho 83 ODFW Sandy 14 46 00.2 12403.3 05/31/85 182

073106 coho 83 ODFW Sandy 11 4600.3 123 59.7 05/31/85 159

073107 coho 83 ODFW Sandy 87 46 19.8 124 18.3 06/18/85 192

073107 coho 83 ODFW Sandy 79 46 00.5 12432.2 06/17/85 183

073107 coho 83 ODFW Sandy 11 46 00.3 123 59.7 05/31/85 160

073108 coho 83 ODFW Sandy 78 46 00.2 12424.7 06/17/85 188

073108 coho 83 ODFW Sandy 105 47 20.1 12446.7 06/24/85 216

073108 coho 83 ODFW Sandy 11 46 00.3 12359.7 05/31/85 153

073204 coho 83 ODFW Cascade 14 4600.2 12403.3 05/31/85 147

073204 coho 83 ODFW Cascade 14 46 00.2 12403.3 05/31/85 156

073204 coho 83 ODFW Cascade 15 46 05.8 12400.8 05/31/85 141

073204 coho 83 ODFW Cascade 11 46 00.3 12359.7 05/31/85 158

073204 coho 83 ODFW Cascade 12 45 59.9 124 03.2 05/31/85 155

073204 coho 83 ODFW Cascade 12 45 59.9 12403.2 05/31/85 151

073206 coho 83 ODFW Cascade 79 46 00.5 124 32.2 06/17/85 172
82 NOAA Technical Report NMFS 93

Appendix (continued)

Release data Recovery data

Tag code Species Brood year Agency Hatchery Set Latitude Longitude Date Length (mm)

1985 (continued)

073206 coho 83 ODFW Cascade 90 4620.1 124 25.8 06/20/85 172

073206 coho 83 ODFW Cascade 94 47 00.0 12439.7 06122/85 183

073206 coho 83 ODFW Cascade 9 4621.0 124 10.0 05/31185 134

073207 coho 83 ODFW Cascade 85 46 20.7 12432.0 06118/85 160

073208 coho 83 ODFW Cascade 15 46 05.8 12400.8 05/31185 151

073344 coho 83 ODFW Cascade 106 47 20.1 12439.3 06/24/85 240

073344 coho 83 ODFW Cascade 12 45 59.9 12403.2 05/31185 164

111704 coho 83 UW Coil. Fisheris 99 46 40.2 12432.8 06/23/85 465

211601 coho 82 TULA Tulalip Creek 105 47 20.1 12446.7 06124/85 495

211626 coho 82 QDNR (Wild) 24 4600.3 12407.0 06/02/85 476

211636 coho 83 QDNR Quinault NFH 110 47 40.1 12438.7 06/25/85 201

211643 coho 83 QDNR Quinault Lake 102 47 00.2 124 53.8 06124185 254

603645 coho 83 OAF Oregon Aqua-Foods 85 46 20.7 12432.0 06118/85 517

603709 coho 83 OAF Oregon Aqua-Foods 60 45 00.0 124 15.2 06/13/85 497

603723 coho 84 OAF Oregon Aqua-Foods 55 44 39.8 124 18.2 06/12/85 129

621723 coho 82 ANAD Anadromous, Inc. 58 4459.9 12407.9 06/13/85 510

621749 coho 83 ANAD Anadromous, Inc. 16 45 59.6 124 02.6 06/01185 492

623024 coho 83 A AD Anadromous, Inc. 43 43 59.8 124 16.1 06/11185 183

623024 coho 83 ANAD Anadromous, Inc. 41 43 59.7 12408.9 06/11185 153

623027 coho 83 ANAD Anadromous, Inc. 48 44 20.1 124 12.2 06/11/85 166

623126 coho 83 ANAD Anadromous, Inc. 83 46 19.9 12418.4 06/18/85 197

623126 coho 83 A AD Anadromous, Inc. 48 44 20.1 124 12.2 06/11185 175

623127 coho 83 ANAD Anadromous, Inc. 90 4620.1 12425.8 06/20/85 201

632809 coho 83 WDF Naselle 1 4620.1 124 11.1 05/29/85 143

632814 coho 83 WDF Nemah 105 47 20.1 12446.7 06/24/85 213

632815 coho 83 WDF Nemah 94 47 00.0 12439.7 06/22/85 237

632820 coho 83 WDF Humptulips 82 46 19.4 124 10.8 06/18/85 132

632829 coho 83 WDF Satsop Springs 94 47 00.0 12439.7 06/22/85 155

632852 coho 82 SQAX Squaxin Island Pens 105 47 20.1 12446.7 06124/85 495

632921 coho 82 WDF Cowlitz 75 4600.3 124 02.9 06/17/85 560

632930 coho 82 WDF Cowlitz 88 46 20.0 12411.0 06120/85 545

633010 coho 83 WDF (Wild) 82 46 19.4 124 10.8 06/18/85 109

633014 coho 82 WDF Willapa 101 47 00.3 12447.6 06/24/85 555

633021 coho 82 COOP George Adams 111 47 40.3 12446.1 06/25/85 520

633023 coho 82 WDF Skykomish 101 47 00.3 12447.6 06/24/85 470

633024 coho 82 SQAX Squaxin Island Pens 105 47 20.1 12446.7 06/24/85 483

633026 coho 82 WDF (Wild) 6 45 58.9 12425.1 05/30/85 421

633135 coho 83 WDF Washougal 90 4620.1 124 25.8 06/20/85 186

633156 coho 83 WDF Kalama Falls 72 45 40.3 124 25.3 06/16/85 119

633156 coho 83 WDF Kalama Falls 11 4600.3 12359.7 05/31185 150

633156 coho 83 WDF Kalama Falls 30 46 19.9 124 32.5 06/05/85 143

633157 coho 83 WDF Kalama Falls 90 46 20.1 12425.8 06120/85 157

633157 coho 83 WDF Kalama Falls 22 45 59.7 12407.9 06/01/85 163

633157 coho 83 WDF Kalama Falls 11 4600.3 12359.7 05/31/85 162

633157 coho 83 WDF Kalama Falls 25 4600.1 12407.0 06/02/85 163

633162 coho 83 WDF Cowlitz 83 46 19.9 12418.4 06/18/85 180

633232 coho 83 WDF Kalama Falls 83 46 19.9 12418.4 06118/85 118

633232 coho 83 WDF Kalama Falls 30 46 19.9 12432.5 06/05/85 163

633232 coho 83 WDF Kalama Falls 23 4600.3 12407.7 06/02/85 148

633232 coho 83 WDF Kalama Falls 23 46 00.3 124 07.7 06/02/85 145

633233 coho 83 WDF Kalama Falls 83 46 19.9 124 18.4 06/18/85 187

633233 coho 83 WDF Kalama Falls 83 4619.9 12418.4 06/18/85 181

633249 coho 83 WDF Cowlitz 12 45 59.9 12403.2 05/31185 150

633250 coho 83 WDF Cowlitz 80 4600.1 124 38.7 06117/85 143

633250 coho 83 WDF Cowlitz 8 45 59.3 124 17.2 05/30/85 148

633252 coho 83 WDF Cowlitz 30 46 19.9 12432.5 06/05/85 144

633253 coho 83 WDF Elkomin 12 45 59.9 124 03.2 05/31185 169

633254 coho 83 WDF Elkomin 6 45 58.9 12425.1 05/30/85 162 -_._-
Pearcy and Fisher: Distribution and Abundance of Juvenile Salmonids 83

Appendix (continued)

Release data Recovery data

Tag code Species Brood year Agency Hatchery Set Latitude Longitude Date Length (mm)

1985 (continued)

633259 coho 83 WDF Grays River 90 4620.1 12425.8 06120/85 178

633261 coho 83 WDF Grays River 30 46 19.9 124 32.5 06/05/85 175

633262 coho 83 WDF Grays River 90 4620.1 12425.8 06120/85 205

633342 coho 83 WDF Willapa 80 4600.1 12438.7 06/17/85 230

633347 coho 83 WDF Simpson 89 46 20.4 124 19.0 06120/85 149

633348 coho 83 WDF Simpson 79 4600.5 12432.2 06/17/85 130

hl0603 coho 83 WDF Humptulips 89 46 20.4 124 19.0 06/20/85 168